K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

22 tháng 2 2019

Đáp án D

Trật tự của tính từ: Opinion – Size – Age – Shape – Color – Origin – Material – Purpose
interesting=> opinion
beautiful => opinion
little => shape
white => color
marble => material
Dịch nghĩa: Khi chúng tôi ở Athens, tôi đã mua một bức tượng nhỏ xinh đẹp màu trắng được làm bằng đá cẩm thạch.

15 tháng 3 2019

Chọn B

Decide: động từ quyết định

Decision: danh từ sự quyết định

Decisive: tính từ thuộc về quyết định

Decisively: trạng từ

29 tháng 6 2019

Đáp án B

Peter: “Ối, tôi thực sự rất xin lỗi!!?”
Susan: “Không sao đâu”
Các đáp án còn lại:
A. Không có gì
C. Điều đó đúng đấy
D. Bạn nói đúng
Đáp án A.You’re welcome thường được dùng để trả lời một lời cảm ơn vì vậy chỉ có đáp án B là câu trả lời hợp lí nhất

22 tháng 10 2017

Đáp án C

(to) complain about something: phàn nàn về điều gì
Thầy giáo nói: "Em luôn mắc những sai lầm khủng khiếp.”
= C. Thầy giáo phàn nàn về việc học trò của mình mắc những sai lầm khủng khiếp.
Các đáp án còn lại:
A. Thầy giáo hỏi học trò của mình tại sao chúng luôn mắc những sai lầm khủng khiếp.
B. Thầy giáo nhận ra rằng học trò của mình luôn mắc những sai lầm khủng khiếp.
C. Thầy giáo đã khiến học trò của mình không phải lúc nào cũng phạm phải những sai lầm khủng khiếp.
Các đáp án trên đều không đúng so với nghĩa của câu gốc.

5 tháng 3 2019

Đáp án C

Abundance= phong phú, large quantity= số lượng lớn>< small quantity= số lượng nhỏ, sufficiency= số lượng đủ, excess= lượng quá mức.

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 55 to 64.The livelihood of each species in the vast and intricate assemblage of living things depends on the existences of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps the most straight forward dependence of one species on another occurs with parasites, organisms that live on or in other living things and derive...
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 55 to 64.

The livelihood of each species in the vast and intricate assemblage of living things depends on the existences of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps the most straight forward dependence of one species on another occurs with parasites, organisms that live on or in other living things and derive nutrients directly from them. The parasitic way of life is widespread. A multitude of microorganisms (including viruses and bacteria) and an army of invertebrates - or creatures lacking a spinal column (including crustaceans, insects, and many different types of worms) - make their livings directly at the expense of other creatures. In the face of this onslaught, living things have evolved a variety of defense mechanisms for protecting their bodies from invasion by other organisms.

Certain fungi and even some kinds of bacteria secrete substances known as antibiotics into their external environment. These substances are capable of killing or inhibiting the growth of various kinds of bacteria that also occupy the area, thereby eliminating or reducing the competition for nutrients. The same principle is used in defense against invaders in other groups of organisms. For example, when attacked by disease - causing fungi or bacteria, many kinds of plants produce chemicals that help to ward off the invaders. Members of the animal kingdom have developed a variety of defense mechanisms for dealing with parasites.

Although these mechanisms vary considerably, all major groups of animals are capable of detecting and reacting to the presence of "foreign" cells. In fact, throughout the animal kingdom, from sponges to certain types of worms, shellfish, and all vertebrates (creatures possessing a spinal column), there is evidence that transplants of cells or fragments of tissues into an animal are accepted only if they come from genetically compatible or closely related individuals. The ability to distinguish between "self" and "nonself", while present in all animals, is most efficient among vertebrates, which have developed an immune system as their defense mechanism. The immune system recognizes and takes action against foreign invaders and transplanted tissues that are treated as foreign cells.

All of the following are defined in the passage EXCEPT ________.

A. parasites (paragraph 1) 

B. invertebrates (paragraph 1)

C. nutrients (paragraph 2)

D. vertebrates (paragraph 3)

1
16 tháng 1 2017

Đáp án C

“parasites, organisms that live on or in other living things and derive nutrients directly from them”- sinh vật sống trên hoặc trong các sinh vật khác và lấy được các chất dinh dưỡng trực tiếp từ chúng. “invertebrates - or creatures lacking a spinal column (including crustaceans, insects, and many different types of worms)” –động vật không xương sống- sinh vật thiếu cột sống ( bao gồm động vật giáp xác, côn trùng, và nhiều loại khác nhau của sâu”, vertebrates (creatures possessing a spinal column) – động vật có xương sống ( các sinh vật sở hữu 1 cột sống)-> loại trừ đáp án A, B, D.

27 tháng 9 2017

Đáp án B

Giải thích: strength (n): sức mạnh = power (n)
Các đáp án còn lại:
A. practice (n): thực hành
C. will (n): ý chí
D. competence (n): năng lực
Dịch nghĩa: Đó là một dịp khi sức mạnh và khả năng thể thao được thử thách, tình bạn và tình đoàn kết được xây dựng và làm sâu sắc hơn

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.

The word "scrape off" is closest in meaning to

A. repel      

B. rub together with        

C. remove   

D. dissolve

1
30 tháng 12 2018

Đáp án C

Từ “scrape off” gần nghĩa nhất với __________.
A. (to) repel: đẩy lùi
B. (to) rub together with: chà xát với
C. (to) remove: loại bỏ, khử đi
D. (to) dissolve: giải thể
(to) scrape off: cạo bỏ ≈ (to) remove

1 tháng 2 2018

Đáp án B

as though: như thể, cứ như là
Cấu trúc As though + past subjunctive (giả định quá khứ đơn) dùng để diễn tả các tình huống giả định (không đúng, không có khả năng xảy ra ở hiện tại). Trong mệnh đề sau as though, tất cả chủ ngữ đều đi với động từ to be were.
Dịch nghĩa: Thật ngạc nhiên khi Jenny hành động như thể là cô ấy và Daren không có những vấn đề nghiêm trọng vào lúc này

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 55 to 64.The livelihood of each species in the vast and intricate assemblage of living things depends on the existences of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps the most straight forward dependence of one species on another occurs with parasites, organisms that live on or in other living things and derive...
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 55 to 64.

The livelihood of each species in the vast and intricate assemblage of living things depends on the existences of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps the most straight forward dependence of one species on another occurs with parasites, organisms that live on or in other living things and derive nutrients directly from them. The parasitic way of life is widespread. A multitude of microorganisms (including viruses and bacteria) and an army of invertebrates - or creatures lacking a spinal column (including crustaceans, insects, and many different types of worms) - make their livings directly at the expense of other creatures. In the face of this onslaught, living things have evolved a variety of defense mechanisms for protecting their bodies from invasion by other organisms.

Certain fungi and even some kinds of bacteria secrete substances known as antibiotics into their external environment. These substances are capable of killing or inhibiting the growth of various kinds of bacteria that also occupy the area, thereby eliminating or reducing the competition for nutrients. The same principle is used in defense against invaders in other groups of organisms. For example, when attacked by disease - causing fungi or bacteria, many kinds of plants produce chemicals that help to ward off the invaders. Members of the animal kingdom have developed a variety of defense mechanisms for dealing with parasites.

Although these mechanisms vary considerably, all major groups of animals are capable of detecting and reacting to the presence of "foreign" cells. In fact, throughout the animal kingdom, from sponges to certain types of worms, shellfish, and all vertebrates (creatures possessing a spinal column), there is evidence that transplants of cells or fragments of tissues into an animal are accepted only if they come from genetically compatible or closely related individuals. The ability to distinguish between "self" and "nonself", while present in all animals, is most efficient among vertebrates, which have developed an immune system as their defense mechanism. The immune system recognizes and takes action against foreign invaders and transplanted tissues that are treated as foreign cells.

According to the passage, a transplant of tissue between genetically incompatible organisms will result in the transplanted tissue ________.

A. becoming a parasite 

B. being treated as an invader

C. developing a new immune system

D. altering its genetic makeup

1
15 tháng 10 2019

Đáp án B

Dựa vào ý của Câu 2 đoạn 3 “all major groups of animals are capable of detecting and reacting to the presence of "foreign" cells”-> việc cấy ghép mô không tương thích sẽ gay ra sự bài trừ “kẻ xâm lăng”