một hình chữ nhật có chiều dài gấp 3 lần chiều rộng và diện tích của hình chữa nhật là 60,75 cm vuông. tính chu vi hình chữ nhật đó

tăng chiều dài 20% số đo của nó, đồng thời giảm chiều rộng 20% số đo của nó thì diện tích hình chữa nhật thay đổi như thế nào?

III. Choose the best answer to complete each of the following sentences.

1. She wondered ______a space buggy looked like.

A. what                B. how                 C. which               D. what things

2.I am not sure ____ food tablets might supply enough energy for astronauts or not.

A. what                          B. why                  C. how                  D. if

3. The teacher asked us what the essential conditions for human life ____

A. is                               B. are                    C. was                  D. were

4. The little boys wondered if he would meet an alien in his dream ______

A. tonight   B. this night          C. that night          D. that day’s night

5. People are using a lot of plastic bags everyday; ………., the amount of waste has kept increasing.

A. however           B. therefore          C. so                     D. although

6. Scotland is very famous ………, its rich culture as well as unique natural beauty.

A. for                             B. about                C. because            D. in

7. People consume a lot of contaminated food. It …….many health problems.

A. leads in             B. leads to             C. results to          D. results from

8. If more people   ……… public transport, it reduce traffic jam and air pollution.

A. use-will            B. used -will           C. used-would      D. use-would

9. You shouldn’t fiddle your ……., when you speak to someone.

A. head                 B. nose                 C. hair                  D. shoulder

10. California ………., the most iconic theme park in the world.

A. had                  B. has had             C. have                 D. has

11. The ash of volcanic eruption ………, be good for growing plants.

A. will                  B. may                  C. might               D. both B & C

12. Most European citizen ………, to apply for a visa to visit Canada.

A. doesn’t have     B. don’t have        C. didn’t have       D. hadn’t have

13. Dave fancy ………, non-fiction movies with his friends.

A. to watch           B. watching C. be watched      D.being watched

14. The teacher told me not hesitate ……, her if I had some questions.

A. asking              B. to ask               C. being asked      D. to be asked

I. Choose the correct answer.

1. I__________ my friends for dinner after work tomorrow.

A. meet       B. will meet          C. am meeting      D. will be meeting

2. Hurry up! The conference__________ in twenty minutes.

A. begins     B. will be begun    C. will begin         D. will be beginning

3. In 30 years’ time we__________ in flying cars.

A. are travelling              B. will be travelling       

C. are going to travel      D. will be travelled

4. __________ longer in the future thanks to medical tech?

A. Will people live          B. Do people live

C. Will people be living  D. Are people living

5. Let’s meet at ten o’clock tomorrow. - Sorry, I________ at ten o’clock.

A. am working   B. am going to work C. will work    D. will be working

6. Good Lord! The engine has stopped. I hope the plane________ down!

A. doesn’t go        B. won’t go C. won’t be gone   D. won’t be going

7. I’ll show them my photos when they__________ round for dinner tomorrow evening.

A. come                B. comes               C. are Corning      D. will come

8. I’ll come over at 8 o’clock tonight. What__________ then?

A. will you do       B. are you doing    C. do you do  D. will you be doing

9. I haven’t made any plans for Easter. I__________ at home.

A. am staying                 B. am going to stay        

C. will probably stay       D. will be staying

10. We__________ a picnic next weekend. Would you like to come?

A. have       B. are going to have        C. will have D. will be having

11. John wants to speak with you. -Please tell him that I__________ him as soon as I’m free.

A. will call            B. am calling         C. call         D. am going to call

12. It__________ when we reach the mountains. Don’t forget to take your anorak jacket.

A. is snowing        B. snows     C. will snow          D. will be snowing

13. There has been a change to schedule and your flight now__________ at 18.40.

A. takes off B. will take off     C. is taking off      D. will be taken off

14. We______ a press conference about our new discovery on Tuesday.

A. hold        B. will hold           C. are holding       D. will be holding

15. At this time tomorrow I____ to Canada, so I won’t be able to call you.

A. am flying          B. am going to fly C. will fly    D. will be flying

III. Write the correct tense or form of the verbs in brackets.

1. Just a decade ago, cell phones___________ (primarily/ use) for calling people.

2. While I__________ (write) the email, the Computer suddenly went off.

3. I didn’t go to the movies with my friends as I___ (see) the film already.

4. You can visit me around 7 o’clock tomorrow evening. I______ (not do)

anything important.

5. If _______ (know) sign language, I’d be able to communicate with her.

6. In the future people ___ (communicate) brain-to-brain using telepathy.

7. I wish my phone _______ (have) a better camera so that I could take good pictures.

8. Could you meet me at the bus station? My bus________ (arrive) at six.

9. We intend _________ (go) to Australia next year to visit our daughter.

10. There’s no point ___________ (wait) for her to change her mind.

IV. Supply the correct form of the words in brackets.

1. There has been communication________ between my son and myself. (fail)

2. Don’t pay any___________ to what they say. (attend)

3. Being able to communicate___________ is the most important of all life skills. (effect)

4. All that___________ can be conveyed in a simple diagram. (inform)

5. _________with others online can be fun, as long as your teen knows how to stay safe. (chat)

6. Most schools nowadays encourage___________ teaching methods. (interact)

7. I was asked for the first and fifth___________ of my six-character password. (digital)

8. If you want to live a better life, make your life more___________. (mean)

9. Smiling and frowning are examples of facial___________. (express)

10. Video conferencing___________ people in various places to have a meeting. (able)

V. Write the correct tense or form of the verbs in brackets.

1. Information technology______ (change) over the past years due to user expectations.

2. ________ (you/ still plant) the trees if I join you at 3.30 this evening?

3. If we________ (have) flying vehicles now, we could solve the problem of traffic jams.

4. John J. Stone-Parker__ (patent) his invention when he was 4 years old.

5. The Computer mouse_______ (invent) by Douglas Engelbart in 1964.

6. They said that they_______ (not be) to the art gallery for a long time.

7. I strongly believe there _______ (be) huge changes in the way we live in 10 years’ time.

8. The planet Mars______ (explore) remotely by spacecraft since the late

20th century.

9. The teacher told us that we________ (may) choose any subject that we _______ (like) best.

10. When I called Jane at 4 o’clock yesterday evening, she said she______ (work) then.

11. My brother is very creative. He is fond of_______ (write) poems and stories.

12. He planned_______ (turn out) minor inventions every ten days.

III. Choose the best answer a, b, c or d to complete the sentence.

1. Science and technology are the keys__________ economic and social development.

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

2. It is predicted that 10 million self-driving cars will be on the road__________ 2020.

A. until                 B. from                 C. since                D. by

3. John J. Stone-Parker came______ the idea of creating a star-shaped device when he was 4 years old.

A. up with            B. down on           C. across with       D. away from

4. If you don’t________ your invention, other people may well take advantage of it.

A. discover           B. explore             C. patent               D. develop

5. Vivian said that she_______ Jim at the supermarket the previous day.

A. was meeting     B. had met   C. would meet      D. was going to meet

6. _________ create the applications or Systems that run on a Computer.

A. Computer manufacturers               B. Software developers

C. Archeologists                                D. Conservationists

7. When I called them yesterday, they told me that they were going to the movies________.

A. now                 B. tonight             C. that night          D. the next day

8. Technological advancements have turned AI and robotics from science fiction to_________.

A. reality              B. benefit              C. quality             D. discovery

9. We’ll have flying cars in the future, _______     we can travel much faster and further.

A. although           B. since                 C. in order that     D. so that

10. “Modern technology saves us lots of time.” - “__________”

A. I think it’s all right!                       B. OK. That’s all.

C. I can’t agree with you more!          D. Not completely all.