Khi hiệu điện thế giữa 2 đầu 1 dây dẫn là 4,5V thì cường độ dòng điện trong dây dẫn là 0,36 A. Khi hiệu điện thế giảm đi 0,5 V thì cường độ dòng điện giảm đi bao nhiêu A?

Tóm tắt và giải

Một dây dẫn mắc vào2 đầu HĐT 16 V thì cường độ dòng điện qua dây là 0,5 A. Nếu HĐT ở 2 đầu dây tăng thêm 4V thì cường độ dòng điện qua dây dẫn có giá trị bao nhiêu?

1.It’s a pity I don’t know where he is.

->I wish_______________

2. We can’t go out because of heavy rain.

->We wish_________________

3.Why don’t we go away more often?

->I wish_______________

4. John smoked a lot a year ago, but now he doesn’t smoke any more.

->John used______________

5.The last time she went out with him was 9 months ago.

->It is____________

Singapore is an island country and the smallest country in South East Asia. Singapore (1)______________ of 63 islands, including the main island itself. The area of Singapore is about 697.2 sq km, about 23% of Singapore’s land area comprises forests and (2) ________________________ reserves. The capital and largest city is Singapore City and the (3) _____________ in June 2006 was about 4 million. Singapore has a tropical rainforest climate, its temperatures (4) ______________ from 22 degree Celsius to 34 degree Celsius. The (5) ____________ language of Singapore is Malay. Today, Singapore has one of the highest (6) _____________ of living in Asia, with its economy centered on the production of electronic items, ship building, petroleum refining, tourism, and international trade.

1. A. includes        B. comprises           C. consists                     D. combines

2. A. nature                 B. natural                C. naturalized             D. naturally

3. A. resident              B. occupation             C. community          D. population

4. A. run                      B. range                       C. drop                                    D. measure

5. A. nation                 B. nation’s        C. national                               D. native

6. A. standards           B. aspects      C. levels                                  D. samples

1.      The struggle for our national _______________________________ lasted for over fifty years.                                                                                                                                   (depend)

2.      Helmets are ___________________________worn by motorcyclists.                         (compel)

3.      Lan and Maryam have ____________________________ for over two years.           (correspondence)

4.      ___________________________people usually go to the mosque to pray.                 (Islam)

5.      I was deeply __________________________by her kindness.                                    (impress)

1. Bahasa Malaysia is simply known ___________Malay.

 A. on                                      B. as                                        C. into                                     D. in

2. Hello, you must be Nam. _____________________

A. Yes, please.            B. That’s right, I am.               C. Yes, here you are.               D. No, he isn’t.

3. This wasLan's firstvisit______on Hang LuocStreet last night.

A. themosque              B. at themosque                      C. to themosque                      D. on themosque

4.  She has to _____________on her parents because she’s still very young.

A. consist                    B. keep                                    C. separate                              D. depend

5. I wish I ____________________where he is now.

A. knew                      B. know                                  C. can know                            D. would know

6. Churches, temples and pagodas are _______________________.

A. places of worship   B. official religions                C. units of currency                D. national languages

7. Islamic people usually go to the mosque to _________________.

A. impress                   B. depend                               C. correspond                          D. pray

8.  Is your brother ____________________ morning exercises?

A. use to do               B. used to do                            C. used to doing                     D. used to did

9. The Malaysian ________________________ is the ringgit.

A. place of worship     B. official religion                  C. unit of currency                  D. national language

10.  Our neighbors are moving away, but I hope we will still keep _________touch with each other.

A. on                          B. as                                        C. into                                     D. in

11. ______________Islam, there are other religions here.

A. In addition to         B. Besides                               C. Moreover                            D. A and B are correct

12.  How many units does the English 9 book _________________of?

A. consist                    B. keep                                    C. separate                              D. depend

13. You can take part in sports activities or not, that depends on you. It’s _________.

A. optional                  B. forceful                              C. compulsory                         D. required

14.  What did your brother ____________________ do when he was young?

A. use to                      B. used to                                C. get used to                          D. was used to

15. Over the next days, Lan took Maryam to the religious place of _________­.

A. workship               B. interest                                 C. entertainment                     D. pleasure

16. The _____________ of London is 8 million.
A. addition                  B. separation                           C. population                          D. introduction

17. The two cities are the same __________ some ways.

A. in                            B. as                                        C. for                                       D. of

18. We are visiting Singapore. It's our first time_____________.

A. foreign                    B. abroad                                C. outside                                D. outdoor

19. Her good behaviors made a deep ____________on all the class members.

A. impression            B. expression                         C. kindness                                 D. happiness

20. Lanand Maryam arepen pals. They___________ with each other twice a month.

A. comprise               B. touch                                 C. correspond                             D. separate

1. His girlfriend stopped him from driving too fast. →His girlfriend prevented ______________________________________________________________

2. The customs stopped him from boarding the plane. →The customs prevented _______________________________________________________________

3. He stopped us from parking our car here. →He prevented us ____________________________________________________________________

4. They tried to stop her from going back there. →They tried to prevent ________________________________________________________________

 5. The heavy luggage stopped him getting on the bus. →The heavy luggage prevented __________________________________________________________

1. How long is she planning to stay……………….you?

2. We haven’t seen Jane……………..a while.

3. I drove……………several hotels…………my way………the gas station.

 4. The young birds depend …………their parents for food…………several weeks.

5. This job is a lot different…………….what I’m used to.

 6. Most students are interested ………………sports.

7. The teacher divided the class……………..five groups.

8. His breakfast consists…………….dry bread and a cup of tea.

 9. Their yard is separated…………..the factory…………a tall fence.

10. ………..Friday, Maryam wanted to visit the mosque…………….Hang Luoc Street.

 9. Swimming is_____________at my school. (compel)

 10. I try to keep meat_____________from other food in the fridge. (separation)

 11. James has_____________knocked against the other car. (purpose)

12. The old man_____________with the young man’s impractical plan. (agree)

13. Half of these_____________are wrong. (calculate)

14. Stamp_____________can be a very expensive hobby. (collect)

15. I’m just a beginner in_____________with her. (compare)

16. They are selling these toys at a very_____________price. (compete)

17. Some people had the_____________of being born into rich families. (advantageous)

 18. We need TV serials which give a good_____________of different aspects of life. (describe)

 19. That thief must be severely_____________. (punish)

 20. It is _____________that Mrs. Brown has kept many cats at home. (believe)