Dentists recommend brushing teeth with a fluoride toothpaste to ____ them from decay. A. defend B. arm C. guard D. protect

DM

Dương Minh

9 tháng 11 2019

Dentists recommend brushing teeth with a fluoride toothpaste to ____ them from decay.

A. defend

B. arm

C. guard

D. protect

#Tiếng anh lớp 11

1

NH

Nguyen Hoang Hai

9 tháng 11 2019

Đáp án: D

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N

Naa.Khahh

12 tháng 6 2021

41. What he told me was a _______ of lies. A. mob B. load C. pack D. flock42. Dentists recommend brushing teeth with a fluoride toothpaste to _______ them from decay. A. defend B. guard C. arm D. protect43. In some parts of the world the indigenous population has been completely _______. A. wiped up B. wiped out C. wiped away...

Đọc tiếp

41. What he told me was a _______ of lies.

A. mob B. load C. pack D. flock

42. Dentists recommend brushing teeth with a fluoride toothpaste to _______ them from decay.

A. defend B. guard C. arm D. protect

43. In some parts of the world the indigenous population has been completely _______.

A. wiped up B. wiped out C. wiped away D. wiped off

44. _______ through the attic and see if you can find anything for the jumble sale.

A. Forage B. Ravage C. Rummage D. Salvage

45. The rain seems to have set _______ for the evening.

A. upon B. in C. about D. down

46. The thought of taking such an examination had never for one moment _______ my head.

A. crossed B. occurred C. entered D. slipped

47. According to a recent survey, most people are on good _______ with their neighbours.

A. relations B. acquaintance C. relationships D. terms

48. This young author has already received the sort of _______ that many older and wiser heads have had to strive a lifetime for.

A. attentiveness B. note C. recognition D. notoriety

49. I hope this headache _______ soon.

A. goes out B. comes away C. passes away D. wears off

50. They began constructing the bridge in 1960, but several years _______ before the project was completed.

A. elapsed B. advanced C. proceeded D. progressed

#Tiếng anh lớp 8

2

DT

Đỗ Thanh Hải

CTVVIP

12 tháng 6 2021

41. What he told me was a _______ of lies.

A. mob B. load C. pack D. flock

42. Dentists recommend brushing teeth with a fluoride toothpaste to _______ them from decay.

A. defend B. guard C. arm D. protect

43. In some parts of the world the indigenous population has been completely _______.

A. wiped up B. wiped out C. wiped away D. wiped off

44. _______ through the attic and see if you can find anything for the jumble sale.

A. Forage B. Ravage C. Rummage D. Salvage

45. The rain seems to have set _______ for the evening.

A. upon B. in C. about D. down

46. The thought of taking such an examination had never for one moment _______ my head.

A. crossed B. occurred C. entered D. slipped

47. According to a recent survey, most people are on good _______ with their neighbours.

A. relations B. acquaintance C. relationships D. terms

48. This young author has already received the sort of _______ that many older and wiser heads have had to strive a lifetime for.

A. attentiveness B. note C. recognition D. notoriety

49. I hope this headache _______ soon.

A. goes out B. comes away C. passes away D. wears off

50. They began constructing the bridge in 1960, but several years _______ before the project was completed.

A. elapsed B. advanced C. proceeded D. progressed

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HH

Hoàng Hạnh Nguyễn

12 tháng 6 2021

41. What he told me was a _______ of lies.

A. mob B. load C. pack D. flock

42. Dentists recommend brushing teeth with a fluoride toothpaste to _______ them from decay.

A. defend B. guard C. arm D. protect

43. In some parts of the world the indigenous population has been completely _______.

A. wiped up B. wiped out C. wiped away D. wiped off

44. _______ through the attic and see if you can find anything for the jumble sale.

A. Forage B. Ravage C. Rummage D. Salvage

45. The rain seems to have set _______ for the evening.

A. upon B. in C. about D. down

46. The thought of taking such an examination had never for one moment _______ my head.

A. crossed B. occurred C. entered D. slipped

47. According to a recent survey, most people are on good _______ with their neighbours.

A. relations B. acquaintance C. relationships D. terms

48. This young author has already received the sort of _______ that many older and wiser heads have had to strive a lifetime for.

A. attentiveness B. note C. recognition D. notoriety

49. I hope this headache _______ soon.

A. goes out B. comes away C. passes away D. wears off

50. They began constructing the bridge in 1960, but several years _______ before the project was completed.

A. elapsed B. advanced C. proceeded D. progressed

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CA

Clone Acc

23 tháng 9 2021

Giúp e với Exercise 3: Choose the best answer . 1. As there was no transport of any kind , he had to make the journey foot . . A. by B. at C. on D. with 2. Dentists recommend brushing teeth with a fluoride toothpaste to them from decay . A defend B. protect C. aim D. guard 3. My older brother has recently —_golf to provide himself with some relaxation . A. take on B. take over C. take with D. take up 4. The management has authorized wage increase for all A. employees B. employers C....

Đọc tiếp

#Tiếng anh lớp 12

0

M

Meomuot

3 tháng 2 2020

1. This kind of medicine should soon...... your cough a. prevent b. solve c. cure d. disappear 2. One way to stop tooth decay is........ less sugar a. you eat b. to et c. for eating d. you are eating 3.Fluoride toothpaste helps........ tooth decay a. prevent b. for preventing c. preventing d. with preventing 4. ........ your teeth with fluoride toothpaste after avery meal is important a. Brush. b. Brushing c. You brush d. Brushes 5. Unfortunately you cannot sto decay sinply by.........

Đọc tiếp

#Tiếng anh lớp 7

2

👁💧👄💧👁

3 tháng 2 2020

1. This kind of medicine should soon...... your cough

a. prevent b. solve c. cure d. disappear

2. One way to stop tooth decay is........ less sugar

a. you eat b. to eat c. for eating d. you are eating

3.Fluoride toothpaste helps........ tooth decay

a. prevent b. for preventing c. preventing d. with preventing

4. ........ your teeth with fluoride toothpaste after avery meal is important

a. Brush. b. Brushing c. You brush d. Brushes

5. Unfortunately you cannot sto decay sinply by...... your teeth

a.you brushing. b. to brush. c. brushing. d. brush

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VM

Vũ Minh Tuấn

3 tháng 2 2020

1. This kind of medicine should soon...... your cough

a. prevent b. solve c. cure d. disappear

2. One way to stop tooth decay is........ less sugar

a. you eat b. to eat c. for eating d. you are eating

3. Fluoride toothpaste helps........ tooth decay

a. prevent b. for preventing c. preventing d. with preventing

4. ........ your teeth with fluoride toothpaste after avery meal is important

a. Brush. b. Brushing c. You brush d. Brushes

5. Unfortunately you cannot sto decay sinply by...... your teeth

a. you brushing. b. to brush. c. brushing. d. brush

Chúc bạn học tốt!

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LQ

Lê Quỳnh Anh

4 tháng 7 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

We can infer from the passage that one benefit of fluoride to healthy teeth is _________ .

A. It strengthens tooth enamel

B. It stimulates saliva production

C. It makes teeth whiter

D. It is a replacement for brushing and flossing in dental care

#Mẫu giáo

1

DH

Dương Hoàn Anh

4 tháng 7 2019

Chọn đáp án A

Chúng ta có thể suy luận từ đoạn văn rằng một lợi ích của florua đối với răng chắc khỏe là _________.

A. Nó tăng cường men răng

B. Nó kích thích việc tiết nước bọt

C. Nó làm cho răng trắng hơn

D. Nó là sự thay thế cho việc đánh răng và dùng chỉ nha khoa trong việc chăm sóc răng miệng

Dẫn chứng: If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. (Nếu Florua có mặt trong nước uống khi răng đang hình thành thì một số florua sẽ được kết hợp vào men răng giúp chúng có khả năng chống lại sự tấn công của axit.)

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LQ

Lê Quỳnh Anh

29 tháng 12 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been "primed" by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.
Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.
In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

We can infer from the passage that one benefit of fluoride to healthy teeth is __________.

A. It strengthens tooth enamel

B. It stimulates saliva production

C. It makes teeth w

D. It is a replacement for brushing and flossing in dental care

#Mẫu giáo

1

DH

Dương Hoàn Anh

29 tháng 12 2018

Đáp án A

Chúng ta có thể suy luận từ đoạn văn rằng một lợi ích của florua đối với răng chắc khỏe là __________.
A. Nó tăng cường men răng
B. Nó kích thích sản xuất nước bọt
C. Nó làm cho răng trắng hơn
D. Nó là một chất thay thế cho việc đánh răng và dùng chỉ nha khoa trong chăm sóc răng miệng
Thông tin ở câu: “If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid.” (Nếu florua có mặt trong nước uống khi răng đang hình thành, một số florua sẽ được kết hợp vào men răng, giúp chúng có khả năng chống lại sự tấn công của axit.

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LQ

Lê Quỳnh Anh

17 tháng 2 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

What can be concluded from the passage about sweets?

A. All sweets should be avoided.

B. Sweets should be eaten with care.

C. It is better to eat sweets a little at a time throughout the day.

D. Sticky sweets are less harmful than other sweets.

#Mẫu giáo

1

DH

Dương Hoàn Anh

17 tháng 2 2019

Chọn đáp án B

Điều gì có thể được kết luận từ bài đọc về đồ ngọt?

A. Chúng ta nên tránh tất các loại đồ ngọt

B. Đồ ngọt phải được ăn cẩn thận

C. Tôt hơn nên ăn đồ ngọt riêng biệt trong ngày

D. Đồ ngọt dẻo thì ít có hại hon các loại đồ ngọt khác

Dẫn chứng: In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. (Ngoài việc vệ sinh răng miệng thường xuyên thì cách tốt để giữ răng khoe là giảm lượng đồ ngọt. Cách ít gây sâu răng nhất khi ăn đồ ngọt là ăn cùng với các bữa ăn chứ không phải giữa các bữa ăn.) => Phải ăn đồ ngọt cẩn thận.

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LQ

Lê Quỳnh Anh

30 tháng 8 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

According to the passage, the value of eating foods with fiber is that _________.

A. they contain Vitamin A

B. they are less expensive than a toothbrush

C. they are able to remove the plaque from your teeth

D. they contain no sugar

#Mẫu giáo

1

DH

Dương Hoàn Anh

30 tháng 8 2018

Chọn đáp án C

Theo bài đọc, giá trị của việc ăn thực phẩm có chất xơ là _________.

A. chúng chứa Vitamin A

B. chúng rẻ hơn một cái bàn chải đánh răng

C. chúng có thể loại bỏ cao răng

D. chúng không chứa đường

Dẫn chứng: “Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush.” (Bất cứ khi nào có thể, hãy ăn các loại thực phẩm giàu chất xơ, như cà rốt sống, táo, cần tây, ...mà có thể giúp loại bỏ cao răng, chúng giống như một chiếc bàn chải đánh răng.)

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LQ

Lê Quỳnh Anh

13 tháng 2 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

The word “it” in the second paragraph refers to _________.

A. dental floss

B. bacteria

C. removal ofplaque

D. plaque

#Mẫu giáo

1

DH

Dương Hoàn Anh

13 tháng 2 2019

Chọn đáp án C

“Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. (Loại bỏ cao răng băng việc đánh răng và dùng chỉ nha khoa tạm thời làm giảm số lượng vi khuẩn trong miệng và do đó giảm được sâu răng. Điều đó cũng làm cho bề mặt răng dễ tiếp cận hơn, cho phép nước bọt trung hòa axit và bù khoáng cho các tổn thương.)”

Do đó: It = Removing plaque (việc loại bỏ cao răng)

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LQ

Lê Quỳnh Anh

6 tháng 9 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

According to the passage, all of the following statements about plaque are true EXCEPT _________.

A. It consists of acid producing bacteria

B. It is not affected by eating sweets

C. It can be removed from teeth by brushing and flossing

D. It reduces the positive effect of saliva

#Mẫu giáo

1

DH

Dương Hoàn Anh

6 tháng 9 2019

Chọn đáp án B

Theo bài đọc, tất cả những điều sau đây đều đúng về cao răng NGOẠI TRỪ _________

A. Nó có chứa các loại vi khuẩn tiết ra axit

B. Nó không bị ảnh hưởng bởi việc ăn đồ ngọt

C. Nó có thể được loại bỏ ra khỏi răng bằng việc đánh răng và dùng chỉ nha khoa

D. Nó giảm tác dụng tích cực của nước bọt

Dẫn chứng:

- The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. (Tỉ lệ vi khuẩn trong miệng tiết ra axit phụ thuộc vào lượng cao răng, thành phần của hệ vi khuẩn, và vào việc vi khuẩn của cao răng có được “phát triển” bởi việc tiếp xúc thường xuyên với đường hay không.” => A đúng, B sai

- Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. (Loại bỏ cao răng bằng việc đánh răng và dùng chỉ nha khoa tạm thời làm giảm số lượng vi khuẩn trong miệng và do đó giảm được sâu răng. Điều đó cũng làm cho bề mặt răng dễ tiếp cận hơn, cho phép nước bọt trung hòa axit và bù khoáng cho các tổn thương.)

=> C, D đúng.

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