find the word which has different sound in the part underlined.

1. A.ago       B. boring       C. explore      D.story

2. A.hold       B.icon           C. open          D. cold

3. A. mention     B. question    C action    D. education

4. A.who       B. when         C. where        D. what

I. Choose a word in each group that is pronounced differently from others. (5pts)
1. A. great B. hate C. heat D. afraid
2. A. sure B. sight C. sale D. soil
3. A. exchange B. brochure C. challenge D. charity
4. A. ordered B. published C. impressed D. escaped
5. A. courses B. classes C. watches D. temples
II. Choose a word in each group that has different stress pattern. (5pts)
6. A. celebration B. federation C. imagination D. inspiration
7. A. Japan B. Australia C. Britain D. Canada
8. A. happen B. local C. expect D. wander
9. A. despite B. dentist C. destroy D. describe
10. A. weather B. lave C. middle D. delicious
III. Choose the best word or phrase that best complete each sentence below. (15 pts)
11. I received a letter_______ my friend.
A. to B. on C. in D. from
12. He is a hard- working student who always_______ good grade.
A. received B. got C. gets D. getting
13. Bell demonstrated his_______ to the public at countless exhibitions.
A. to invent B. invention C. inventing D. invented
14 .Different language_______ learn words_______ different ways.
A. learns/in B. learn/in C. learns/of D. learners/on
15. She gave me your_______.
A. report card B. to report card C. reported card D. reporting card
16. Yesterday I came_______ your brother when I was going to school.
A. of B. to C. about D. across
17. You are a tourist on_______ in HCM City.
A. Journey B. traveling C. vacation D. trip
18 .Would you mind if I_______ a photo.
A. to take B. take C. taken D. took
19. They have to make_______ then children do not play with matches.
A. ensure B. sure C. sure D. ensuring
20. TV_______ information and entertainment’.
A. to take B. gives C. brings D. makes
21. Opposite our house is a nice park_______ there are many trees and flowers.
A. which B. where C. that D. who
22. I asked him whether_______ leaving for the capital that night.
A. is he B. he is C. was he D. he was
23. “My watch is broken. “Why don’t you_______?
A. have it repair B. have it repairing C. have it for repair D. have it repaired
24. The earth_______ on the sun for its heat and light
A. is depend B. has depend C. depending D. depends
25. If Mai comes to England it will be a good_______ for her to improve her English.
A. possibility B. opportunity C. advantage D. experience
IV. Supply the correct tense of the verbs in brackets to compete the passage. (10 pts)
Robert Wilson (26. be)______ a politician. He (27. go)______ to Oxford University in 1960, and in
1976 he (28. become)______ a Member of Parliament (an MP). He (29. be)______ an MP since then.
He (30. be)______ Minister of Education from 1980 to 1985. He (31. write)______ many books. He
(32. get)______ married and (33. have)______ two children. His family lived in Oxford for 15 years,
then they (34. move)______ to London in 1980. They now (35. live)______ in a house in Kensington
Street, London.
V. Complete the following sentences with the correct form of words. (10 pts)
36. All________ between Paris and Hanoi have been cancelled due to fog. FLY
37. There is plenty of________ for young people in this city. ENTERTAIN                                                                                                    38. It’s ________ to complain; you won’t get your money back. USE
39. During his________ the family used to live in the country side. CHILD
40. He is such (a/an)________ person that no one likes him. HELP
41. The little village is very quiet and________. PEACE
42. Many people still to believe that smoking is________. HARM
43. He is interested in the________ of old buildings. PRESERVE
44. The________ area of the city is not very attractive. INDUSTRY
45. His performance in Hamlet was most________. IMPRESS
VI. Fill one suitable word in each blank in the following passage. (10 pts)
Everyone wants to reduce pollution. But pollution problem is (46)______ complicated as it is
serious. It is complicated (47)______ much pollution is caused by things that benefit people. For
example, exhaust (48)______ automobiles causes a large percentage of all pollution. But
automobiles
(49)______ transportation for millions of people. Factories discharge much of the material
(50)______
pollutes the air and water, but factories give employment to a large (51)______ of people . Too
much fertilizer or pesticide can run soil, but fertilizers and pesticide (52)______ important aids to
the growing of crops. Thus, to end (53)______ greatly reduces pollution immediately, people would
have to (54)______ using many things that benefit them. Most people do not want to do that, of
course. But pollution can (55)______ gradually reduced in several ways.
VII. Find the option (A, B, C, or D) that needs correcting. (5 pts)
56. Would you mind if I ask you a private question?
A B C D
57. They happily looked at their children to play in the yard.
A B C D
58. This is the first time I visited a famous place in Hanoi.
A B C D
59. Our teacher told to us to spend more time at home practicing our pronunciation.
A B C D
60. You shouldn’t let your children playing with matches.
A B C D
VIII. Complete the following questions with the correct preposition. (10 pts)
61. She isn’t here_______________ the moment.
62. Warm clothes protect us________________ bad weather.
63. What do you often do________________ weekends.
64. We haven’t seen him_____________ last month.
65. He had an accident and was taken__________ hospital.
66. We regarded him____________ a famous doctor.
67. You’re better ask __________ the information desk.
68. He borrowed $100______________ his father
69. “Hamlet” is written____________ Shakespeare.
70. Jane fell_________ her bike and hit head on the road.
IX. Rewrite the sentences, beginning as shown, so that the meanings stay the same. (20 pts)
71. They have just sold that old house. – That old house…………….
72. Charles lives quite near his aunt’s house. – Charles doesn’t……………
73. It was such a hard cake that I couldn’t eat it. – The cake……………………..
74. Linh is a better cook than Hoa. – Hoa can’t…………………….
75. I last heard this song ten years ago. – It is…………………………….
76. “You’d better not lend that man any more money, Mary,“ said Liz. – Liz advised…………………
77. I was a two-hour flight from Ha Noi to Ho Chi Minh city. – It took………………………..
78. Although he took a taxi, Bill still arrived late for the concert. – Despite………………………
79. The film was so interesting that we watched it several times. – It was ………………………..
80. Write your name here. – Let……………………… 

chia động từ ở thời hiện tại đơn hoặc tiếp diễn

1,sorry can't help you.I___(not know) where she keep her files.

2,what____you__(do)next saturday?Nothing scecial.I___(stay) at home

3,I___(think) your new hat___(look) nice on you.

4,I___(live) with my parents but right now I___(stay) with some friends for a few days.

5,I can't talk on the phone?I___(drive) home

6,where are the children?They___(lie)on beach over there.

7,You never___(listen) to a word I say!You ___always___(listen)to that mp3 player!

8,he___(not understand) what you___talk about.He's foreign.

9,How much___your suitcase___(weigh)?It___(look) relly heavy.

các bn giúp mk nha!!mk cần gấp 

cảm ơn^^

 II. Put the verbs in brackets into correct tenses. (10 pts)
a. Yesterday, I (6. spend)_______ two hours (7. do)_______ the homework.
b. The thieves (8. catch)_______ when the (9. leave)_______ the bank.
c. Two hours ago, Mrs. Brown (10. have)_______ Alice (11. take)_______ her son to the school.
d. How many times you (12. be)_______ to Ho Chi Minh City?
e. The moon (13. move)_______ around the earth.
f. Next summer, my parents will let me (14. visit)_______ my grandfather.
g. How about (15. go)_______ to the zoo?
III. Fill in the gaps with suitable prepositions. (10 pts)
a. She went out the room (16)_______ saying a word.
b. The life in the countryside is changing (17)_______ better.
c. She was born (18)_______ 2 o’clock (19)_______ 18 th July.
d. Mary is thinking (20)_______ importing flowers (21)_______ China.
e. They are traveling (22)_______ the airport (23)_______ a bus.
f. I am afraid (24)_______ ghost.
g. The fight (25)_______ deforestation is very important.
IV. Put the words in brackets into correct forms. (10 pts)
26. The question isn’t good. It’s_______ to ask. (import)
27. His father soon died of a_______ heart. (break)
28. Don’t let the child go out because it’s_______. (wind)
29. I am going to have a_______ check-up next Monday. (medicine)
30. The knife is _______ it can cut everything. (use)
31. Ha Long Bay is in_______ Vietnam. (north)
32. The wild animals are being_______. (appear)
33. I couldn’t find any_______ between the two picture. (different)
34. She is a _______ she sells flowers at a shop in Canada. (flower)
35. Long put_______ on that towel to stop the bleeding. (press)
V. Choose the best answer. (10 pts)
36. Do you find anything________ there?
A. interested B. useful C. bored D. easily
37. Ann is very busy these days. She has________ free time.
A. a little B. few C. a few D. little
38. It’s raining very________
A. wet B. badly C. hard D. firmly
39. A new shopping is________ in my neighborhood today.
A. being opened B. opened C. opening D. be opened
40. The stolen machines were________ a lot of money.
A. valued B. cost C. price D. worth
41. I finish________ the book and went to bed.
A. read B. to read C. reading D. reads
42. That man can tell us where________.
A. does John live B. is John living C. John lives D. John live
43. ________ clothes do you prefer, T- shirt or pullover?
A. Which B. What C. Where D. How
44. Can you________ your paper with you when I come there, please?
A. collect B. bring C. get D. take
45. Smoking is harmful________ your health.                                                                                                                                              A. on B. for C. about D. toA. on B. for C. about D. to                             

VI. Rewrite the following sentences as directed. (10 pts)
46. Has anyone asked you for your opinions? → Nam said that__________________.
47. I had a dog once, but I don’t have anymore. → I_________________________________.
48. The water was so cold that the children couldn’t swim in it. → The water______________________.
49. “Eat more and more vegetables” the doctor said. → The doctor told________________.
50. To live on your salary must be hard. → It________________________________.
51. Tom is the best player in the team. → No one in the team____________.
52. It’s interesting to read this book. → This book______________________.
53. I spend half an hour traveling to work by motorbike everyday.→ It takes______________________.
54. Peter said he wasn’t feeling well then. → Peter said “I___________________.”
55. A boy was injured in the accident, he is now in the hospital. → The boy________________________.
VIII. Read the passage and answer the questions. (10 pts)

ends Just with growing been can reason you recycling what

Most types of paper (66)______ be recycled. Newspapers have (67)______ recycled profitably for
decades and recycling of other paper is (68)______. It’s important to know (69)______ you are buying
in a paper product, for that (70)______ virtually all paper products should be marked (71)______ the
percentage and type of recycled content. (72)______ saying “recycle paper” isn’t enough. “Recycled
paper” can mean anything from 100% true recycled paper to 1% re-manufactured (73)______ of
large paper rolls. “Post- consumer” mean the paper that (74)______ and I return to (75)______
centers.
IX. Choose the best answer which can fit in the number space. (10 pts).
Many British people go abroad on holiday, to visit family, or on short business trips. People are
(76)______ to find out how to get urgent treatment before leaving the UK. They have to (77)______ a
form which explains what they (78)______ do if they fall ill or (79)______ an accident, and what
arrangements exist in (80)______ country for medical treatment. The regulations are fairly simple
but (81)______ people do not have this information, they may (82)______ that private medical care is
extremely expensive. It is not unusual for people to discover that they do not have (83)______
money with them to (84)______ the total costs and (85)______ such circumstances an already
difficult situation becomes even more complicated.
76. A. advised B. suggested C. said D. spoken
77. A. put B. bring C. till D. get
78. A. ought B. will C. should D. may
79. A. have B. get C. happen D. take
80. A. their B. each C. one D. this
81. A. because B. whether C. as D. if
82. A. look B. want C. find D. know
83. A. enough B. little C. few D. full
84. A. pay B. give C. spend D. have
85. A. on B. in C. at D. up

Choose the best answers
1. They set off on Sunday morning ................... the rain.
A. although B. despite of C. in spite of
2. They spent a lot of money on the film. .................., it wasn’t a big
success
A. Nevertheless B. However C. Although
3. We ________________ to school two years ago. Now I go to school on
foot.
A. used to cycle B. cycled C. was cycling
4. ________________ the silly story, many people enjoyed the film.
A. Although B. In spite of C. However
5. Traffic accidents can be prevented if people ________________ the rules.
A. remember B. obey C. go after
6. I’m sure you’ll find the film ________________
A. amuse B. amusing C. amused
7. Give a ________________ before you turn left or right.
A. signal B. turn C. sound
8. The end of the film was so ________________
A. moved B. moving C. move
9. Avatar is a 3D big hit- the special __________are amazing
A. effects B. scenes C. stages
10.The film was so boring.______, Jack saw it from beginning to end.
A. Therefore B. However C. Although
11.Public______ in the city is quite good, and it’s not expensive.
A. journey B. vehicle C. transport
12.Traffic accidents can be prevented if people _______the rules.
A. obey B. go after C. take care of
13.I found the book so ______that I couldn’t put it down.
A. gripping B. shocking C. boring

14.Mr. Bean’s holiday is a ______film- I was laughing from beginning to
end.
A. hilarious B. violent C. moving
15.My aunt and uncle have never flown ______________ plane.
A. by B. for C. on
16.Titanic is a ______________film. I cried at the end of the film.
A. violent B. moving C. bored
17.Crazy Coconut ________ Julia Roberts and Brad Pitt.
A. acts B. plays C. stars
18.It’s really difficult to ____________ a bicycle up the hill.
A.pedal B. drive C. fly
19.Pedestrians always look ________ where they go.
A. carelessly B. carefully C. beautifully
20.I went to see the film ________I felt really tired.
A. despite B. although C. so
21.Pedestrians have to use the ________ or footpath.
A. street B. road C. pavement
22.________ the film is a bit frightening, I really enjoyed it.
A. However B. Nevertheless C. Although
23.That film was so _______ that I couldn’t sleep after watching it.
A. entertaining B. scary C. boring
24.Traffic accidents can be prevented if people ________the rules.
A. remember B. obey C. go after
25.The film didn’t receive good reviews from critics. ________, many
people saw it.
A. However B. In spite of C. Although
26.We were ________ by his thrilling account of his adventures in the
jungle.
A. amazed B. amazing C. amaze
27.The Lion King is an excellent _________film. I really love cartoons!
A. romantic comedy B. animated C. action
28.A _______ is a place on a road at which vehicles must stop to allow
people to cross the street.
A. zebra-crossing B. traffic light C. traffic signal

29._________ the film was so gripping, Tom slept from the beginning to
end.
A. However B. Despite C. Although
30.Linda used to ________ morning exercise when she got up early.
A. did B. does C. do
31.There _________ a bus station in the city centre, but it has been moved to
the suburbs.
A. used to be B. used to have C. were
32.Do you feel like seeing a film?
A. No. I don’t like it at all. B. Sure. What film shall we see?
C. Who is in it?
II. Supply the correct verb forms or tenses
1. You (not/ allow) ________________ to go into that street
2. What’s the best film________________ you (see) ________________
recently ?
3. My mother used________________ clothes by hand last year. ( wash)
4. In spite of ________________ up early, he was late for the first train.
(get)
5. Despite______________ so young, he performed excellently. (be)
6. Stallone ________ never____________ an Oscar for Best Actor. (win)
7. I __________________ a motorbike to work for a long time. (not drive)
8. Children ________________across the street at the zebra crossing at
present. (cross)
9. Despite ________ tired, Mary still works hard (feel)
10.When he was young, my father used ______________his bicycle to
school. (ride)
11.She always ____________ newspapers in the morning. (read)
12.When he was young, my father used ______________his bicycle to
school. (ride)
III. Answer about yourself
1. What kind of films do you like?
2. Did you use to play soccer in the street when you were a small child?
3. How far is it from your house to school?
4. Is it good for young kids to see violence on TV?
5. How long does it take you to go to school?

6. Who is your favorite actor ?
7. How often do you see a movie ?
8. Where do you see a film ?
IV. Rearrange sentences
1. Although / is excellent, I/ the acting / the film/ don’t enjoy
2. Although the professor hates/ at first / the film star/, she falls in / him in
the end/ love with
3. Although the / slept from beginning / gripping, Tom / film was / to end
4. Although they / big success / money on / spent a lot of/ the film, it wasn’t a
5. Critics were / his / performance / disappointed at / as King Lear
6. Despite careful / of difficulties / preparation, they had a lot / the film/ in
making
7. I am / has won two / Best Actor / amazed that he / Oscars for
8. I couldn’t take / the screen because the film / my eyes off / gripping / was
so
9. I don’t think / he was very good in / Stallone is a very / the Rocky films /
good actor although
10. I really enjoyed / friends said it wasn’t / the Water War although / a very
good film / most of my
11. I went / tired / feeling really / to see the / film despite
12. It says / showing at / the White Sands is / at 8pm tonight / Kim Dong
Cinema
13. It’s about / star / profession and a / a female / male film
14. Let’s / at the film / the paper / take a look / section of
15. Most of / Mr Bean is / entertaining / very funny and / them say
16. The boy was / couldn’t sleep / the film that he / last night/ so frightened by
17. The film / almost fell / boring that we / asleep/ was so
18. The film is based / twenty years ago / in modern times / on a book that was
written/ although it is set
19. They get / island and have / shipwrecked on / a deserted /to live together
20. We enjoyed the / although few people / Ngoc Khanh Cinema / came to see
it / film at the
21. We were / film / the ending of / that horror / terrified of
22. Jack saves / board the ship / killing herself / Rose from / during the journey
on

I. Find the word whose underlined part is pronounced different from others. (5 pts)
1. A. worked B. naked C. looked D. attacked
2. A. engineer B. excited C. experiment D. exhibition
3. A. teammate B. speaker C. bean D. overhead
4. A. furious B. purpose C. surf D. turn
5. A. deny B. deposit C. benefit D. respond
II. Choose the best answer to fill in the blank. (15 pts)
6. My friend________ the answer to the question now.
A. is known B. know C. is knowing D. knows
7. I think I’ll buy this pair of shoes. They________ me really well.
A. fit B. are fitting C. have fit D. are fitted
8. I’ll tell my uncle all the news when I________ him.
A. will see B. am going to see C. see D. shall see
9. I’ve got my key. I found it when I________ for something else.
A. looked B. have looked C. looking D. was looking
10. “All these photographs________ with a very cheap camera,” he said.
A. have taken B. take C. were taken D. were taking
11. I wondered________ the tickets were on sale yet.
A. what B. whether C. when D. where
12. Dinner will be ready soon. Can you please________ the table?
A. lay B. put C. make D. take
13. Our neighbors are very________ on camping holidays.
A. interested B. fond C. eager D. keen
14. There are some one following us. I think we________ in this area.
A. are following B. are followed C. follow D. are being followed
15. Walt Disney________ the character of Mickey Mouse
A. was created B. is created C. creates D. created
16. Would you like to go to the cinema? –No, thanks. I’d________ stay at home.
A. better B. like C. rather D. prefer
17. Did they ask you what examinations you’ve________?
A. succeeded B. passed C. overcome D. obtained
18. The Caspian Sea, a salt lake, is________ any other lake in the world.
A. larger than B. largest C. the largest D. the larger than
19. Most people prefer________ money to________ it.
A. spend/earn B. spending/earn C. to spend/earning D. spending/earning
20. Our teacher made us________ harder.
A. working B. to work C. work D. works
III. Choose the word or phrase that needs correcting. (5 pts)
21. Peter, I’d would like you to meet some very special people

A B C D
22. It is greatly to be with you on such a lovely day
A B C D
23. Would you mind to go to the local bookshop to get me some papers?
A B C D
24. I think I prefer country life more than city life.
A B C D
25. Thanks for invite me to the water-fetching contest of your school.
A B C D

IV. Fill in the blanks with the right form of the CAPITAL words provided. (10 pts)
26. It is______________ to eat too much sugar and fatty food. HEALTH
27. During his____________ the family lived in Cornwall. CHILD
28. Bell_____________ demonstrated his invention. SUCCESS
29. Every day, there are two_________ from Da Nang to Ho Chi Minh city. FLY                         

30. ______________, dark clouds appeared and it began to rain. SUDDEN
31. Their children have quite____________ characters. DIFFERENCE
32. What is the correct_____________ of this word? PRONOUNCE
33. Relax for some minutes and you’ll feel more_________. COMFORT
34. She is one of the greatest_____________ to appear in this theater. PERFORM
35. My house is on the top of a hill. It’s very __________ there in the fall. WIND
V. Complete the text with the verbs in brackets. Use the passive form. (5 pts)

Wiki Website

“Wiki” means “quick” in Hawaiian. The word is used to describe websites that (36. write)______ by
people who use the site. Anyone who visits a wiki website can add or change the information on
the page. The first wiki website (37. create)______ by Ward Cunningham in 1995. Since then, wiki
guidebooks, wiki dictionaries and wiki encyclopedias (38. publish)______ on the Internet. The most
popular online encyclopedia is “wikipedia”. Over 22 million entries (39. add)______ since it started,
and it is now the most detailed encyclopedia in the world. According to the create or of Wikipedia,
the work (40. do)______ by 20. 000 people who regularly edit the pages. The amazing thing is that
the information is completely free.
VI. Fill in the blanks with suitable word. (10 pts)
celebration custom gather gifts midnight particularly symbolize ring bring display
In Scotland, the biggest (41)______ of the year is “Hogmanay”. “Hogmanay” is the Scottish word for
New Year’s Eve. On 31 st December in Edinburgh, there is an enormous firework (42)______ at the
castle and they play live music in the park. Thousands of people (43)______ in the streets, coffees
and bars. Then at 12 o’clock, church bells (44)______ all over the city. After midnight people go
“first footing”. This is a Scottish (45)______ that dates back hundreds of years. “First footing” is
visiting your neighbors after (46)______ on New Year’s Eve. The visitors must step into the house
with their right foot step first, to (47)______ good luck. Traditionally, the visitors bring three
(48)______: a piece of coal, a piece of “short bread” ( a Scottish biscuit) and a little whisky. The gifts
(49)______ warmth, food and happiness. If the first person who visits your home after midnight is a
man with dark hair, that is (50)______ lucky.
VII. Read the passage and choose the best answer in the blanket. (10 pts)
For many people, traveling by plane is an exciting experience. Others, however, find the
whole idea quite terrifying, (51)______ flying is no more dangerous (52)______ any other form of
travel and some experts say it is considerably safer. It is known, however, that most accident
occurs (53)______ taking off and landing when (54)______ decisions are vitally important.
The people (55)______ job it is to look (56)______ the passengers, the stewards and
stewardesses play an important part in helping passengers to (57)______ safe and comfortable.
Indeed for many passengers being (58)______ such care of is all part of the total experience.
(59)______ other form of travel involves waiting for people in quite the same (60)______ with food,
drink, newspapers, magazines, music, and even video films.
51. A. although B. too C. and D. because
52. A. than B. as C. then D. with
53. A. while B. during C. for D. through
54. A. leader’s B. chief’s C. driver’s D. pilot’s
55. A. whose B. which C. their D. that
56. A. for B. up C. after D. round
57. A. feel B. rest C. experience D. lie
58. A. given B. kept C. shown D. taken
59. A. Any B. No C. All D. Not
60. A. sort B. kind C. way D. part
VIII. Rewrite the following sentences so that it has a similar meaning to the first. (10 pts)
61. Tom works hard as a student. → Tom__________________________________________.
62. It is good exercise to run a mile a day. → Running______________________________________.
63. It’s a great pleasure to be with you. → Being_________________________________________.
64. We didn’t see her at all. → She___________________________________________.
65. Tom is not as tall as Peter. → Peter_________________________________________.

ĐỀ CƯƠNG ÔN TẬP VẬT LÍ 7

Câu 1: Điền từ còn thiếu vào dấu ... trong các câu sau:

- Nhiều vật sau cọ xát có khả năng ... các vật khác.

- Nhiều vật sau khi bị cọ xát có khả năng... bóng đèn bút thử điện.

- Các vật sau khi bị cọ xát có khả năng hút các vật khác và làm sáng bóng đèn bút thử điện được gọi là các vật ... hay còn gọi là vật mang ...

Câu 2: Có phải tất cả các vật sau khi bị cọ xát đều nhiễm điện. Kể tên một số vật sau khi cọ xát bị nhiễm điện mà em biết. Em kiểm chứng vật bị nhiễm điện hay không bằng cách nào?

Câu 3: Khi thổi vào mặt bàn, bụi bay đi nhưng cánh quạt điện thổi gió mạnh một thời gian sau lại bám nhiều bụi đặc biệt là ở vụng quanh mép. Em hãy giải thích hiện tượng đó.

Câu 4: Có mấy loại điện tích? Nêu rõ từng loại?

Câu 5: Điền từ còn thiếu vào dấu ... trong các câu sau:

- Hai vật giống nhau được cọ xát như nhau thì mang điện tích ... loại khi được đặt gần nhau thì ... nhau. - Thanh nhựa sẫm màu và thanh thủy tinh khi được cọ xát thì chúng ... nhau do chúng nhiễm điện tích ... loại.

- Có ... loại điện tích. Các vật mang điện cùng loại thì... nhau, các vật mang điện khác loại thì ... nhau.

- Kí hiệu của điện tích âm là dấu ... kí hiệu của điện tích dương là...

Câu 6: Nêu rõ cấu tạo của nguyên tử? (lớp vỏ, hạt nhân mang điện tích gì?)

Nguyên tử trung hòa về điện khi nào? 

Câu 7: Electron có thể dịch chuyển từ vật này sang vật khác không?

Câu 8: Trước khi cọ xát có phải các vật đều có điện tích dương và điện tích âm hay không? Nếu có thì các điện tích này tồn tại ở những loại hạt nào cấu tại nên vật.

Câu 9: Tại sao trước khi cọ xát các vật không hút các vụn giấy nhỏ?

Câu 10: Điền từ còn thiếu vào dấu ... trong các câu sau:

- bóng đèn bút thử điện sáng khi có các ... qua nó.

- ... là dòng dịch chuyển các điện tích có hướng.

- Đèn điện sáng, quạt điệnq quay và các thiết bị điện hoạt động khi có... chạy qua

- ... là nơi phát ra dòng điện và có khả năng cung cấp dòng điện cho các dụng cụ điện hoạt động.

- Mỗi nguồn điện có hai cực cực ... kí hiệu dấu +  , cực ... kí hiệu dấu –

Câu 11: Hãy kể tên một số số nguồn điệ mà em biết?

Câu 12: Khi lắp bóng đèn và mạch điện vào nguồn điện nhưng đèn không sáng chúng ta phải kiểm tra những bộ phận vào?

Câu 13: Em hãy nêu vai trò của điện trong cuộc sống hiện nay mà em biết?