Chọn đáp án đúng:

1. ILO conventions allow schoolchildren to work during theirholidays and free time. Strict safety measures must be taken

A. ILO conventions will allow schoolchildren to work during theirholidays and free time provided that strict measures are taken

B. If ILO conventions allow schoolchildren to work during theirholidays and free time, strict safety measures will be taken

C. ILO conventions will allow schoolchildren to work during theirholidays and free time unless strict safety measures are taken

D, ILO conventions won't allow schoolchildren to work during theirholidays and free time in case strict safety measures must be taken

2. He doesn't take my advice into consideration. That's why he is so at a loss right now.

A. Unless he takes some exercise, he will not be so unhealthy

B. If he took my advice into consideration, he wouldn't be so at a loss right now

C. If he had taken my advice into consideration, he wouldn't have been so at a loss right now

D. But for my advice, he would have been at a loss right now

3. I didn't pay attention to the teacher. I was punished by her

A. I wouldn't have been punished if I had paid attention to the teacher

B. Although I paid attention to the teacher, I was still punished by her

C. I would have been punished if I had paid attention to the teacher

D. Unless I was punished by the teacher, I would pay attention to hẻ

4. He was a poor man. He led a devoted life to the revolutionary cause

A. He could not devote his life to the revolutionary cause because of his poverty

B. If he had not been so poor, he could have devoted  his life to the revolutionary cause

C. Poor as he was, he led a devoted his life to the revolutionary cause

D. He led a devoted his life to the revolutionary cause, but he was so poor

Chọn câu đúng:

1. As the plane..., my kids held my hands tightly

A. took off      B. went on       C. set off       D. took up

2. My hobby is watching the work...by Shakespeare in the 20th century

A. writing       B. written        C. to write        D. is written

3. Voicing your...about examination on a live TV or radio discussion program is not as easy as it sounds

A. problem        B. opinion       C. hope        D. agreement

4. You'd better go home now before the rain starts

A. You should go home now before the rain starts

B. You would go home now before the rain starts

C.You mustn't go home now before the rain starts

D. You needn't go home now before the rain starts

5. You can go out with your friends. Make sure you come back home before midnight

A. You can't go out with your friends in case you come back home before midnight

B. You can't go out with your friends if you come back home before midnight

C. You can go out with your friends as long as you come back home before midnight

D. You can go out with your friends unless you come back home before midnight

Chọn trọng âm khác:

1. A. electric      B. poweful       C. commercial      D. decisive

2. A. pressure       B. college       C. household        D. career

Chọn từ trái nghĩa:
1. I was told not to (breathe a world), but I knew I had to tell someone about such serious allegations

A. reveal       B. conceal       C. expose       D. vanish

2. I've been (over the moon) ever since I got engaged-I jusst can't stop looking at my ring!

A. happy       B. contented       C. miserable       D. unsuccessful

3. I'm glad Tony started repaying the money he borrowed from me, but the five dollars he gave me yesterday is just (a drop in the ocean) compared to what he still owes

A. a very small amount                      B. a whole marine

C. a large amount                              D. a small drop of liquid

4. Mary broke a dining-room window and had to (face the music) when her father got home

A. receive punishment            B. sing a song

C. be criticized                        D. be paid compliment

5. When Carla transferred to a new school, she (felt like a fish out of water) because she didn't know anyone there

A. felt thirsty      B. felt comfortable      C. felt anxious      D. felt enthusiatic

Chọn đáp án đúng:

1. Iam sure that they are exhausted now

A. They should be exhausted now

B. They need to be exhausted now

C. They must have been exhausted now

D. They must be exhausted now

2. Perhaps Marry knows the answer of this question

A. Marry must know the answer of this question

B. Marry need to know the answer of this question

C. Marry can't have known the answer of this question

D. Marry may know the answer of this question

3. You made the mistake of giving him my address

A. You shouldn't have given him my address

B. You needn't have given him my address

C. You must have done the mistake of giving him my address

D. The mistake should be made when you gave him my address

Chọn trọng âm khác:

1. A. explain      B. involve       C. borrow       D. discuss

2. A. behave      B. relax        C. enter       D. allow

3. A. disaster        B. origin       C. charity       D. agency

4. A. president        B. opponent        C. assistant        D. companion

5. A. obtain        B. perform        C. affect        D. happen

6. A. successful       B. important        C. musical        D. expensive 

7. A. arrive        B. accept        C. include        D. practice

8. A. beauty       B. album       C. question       D. success

9. A. imagine      B. discover       C. decorate       D. consider

Chọn đáp án đúng:

1. Why did you have to...me...in front of everybody like that?

A. put-off       B. put-down       C. put-at         D. put-by

2. If you don't want to catch a train home at that time of night, you're welcome to....

A. sleep with      B. sleep over       C. sleep in       D. sleep on

Câu 1: Bức tranh thiên nhiên chiều tối được miêu tả qua mấy hình ảnh? Là hình ảnh nào? Hình ảnh đó có đặc điểm gì?

Câu 2: Tìm những câu thơ miêu tả chiều tối có hình ảnh cánh chim?

Câu 3: Hình dung miêu tả về cảnh thiên nhiên núi rừng lúc chiều tối?

Chọn câu trả lời đúng:

1. They must have done as they were told,....?

A. must they       B. musn't they      C. are they      D. haven't they

2. Beyond...stars, the astronaut saw mothing but....space

A. the-the     B. 0-the       C. 0-0        D. the-0

3. Doctors have accepted that acupuncture can work for pain.....

A. liberation       B. relief        C. killing       D. release

4. I sád she coukd come and live with us, and she said she'd...it....

A. think-through      B. think-up       C. think-about       D. think-over

5. Why did you have to...me...in front of everybody like that?

A. sleep with      B. sleep over      C. sleep in       D. sleep on

6. The flight was canceled...the weather conditions were bad

A. because of     B. due to the fact that       C. thanks       D. that

7....Marge, three couples are invited

A. addition      B. besides       C. next       D. moreover

8. He found some squatters living in his house so he asked the court for a speedy...order

A. eviction      B. ejection      C. discharge       D. expulsion

9. The children...with homework decide to take a gap year

A. obsessed      B. obsess       C. obsessing       D. to be obsessed

Chọn trọng âm khác

1. A. terrible        B. wonderful      C. delicious       D. digital

2. A. remember       B. develop       C. establish         D. celebrate

3. A. signal         B. dentist          C. student         D. cartoon

4. A. manage       B. enjoy       C. receive       D. admit

Chọn trọng âm khác:

1. A. office      B. nature       C. result        D. farmer

2. A. difficult       B. popular       C. effective       D. national

3. A. answer       B. reply           C. singer           D. future

4. A. medicial      B. essential        C. dangerous       D. regular

5. A. doctor         B. student           C. advice         D. parent

6. A. advice         B. justice            C. circus          D. product

7. A. politician      B. genetics        C. artificial        D. controversial

8. A. sympathy       B. poverty        C. equipment       D. character

9. A. intend             B. install         C. follow         D. decide

10. A. apartment         B. benefit       C. argument       D. vacancy

Chọn trọng âm khác:

1. A. birthday       B. happy        C. enjoy      D. mature

2. A. develop       B. conduction       C. partnership       D. majority

Chọn đáp án đúng:

1. The internet is an important...of our modern life

A. invent     B. invention      C. inventing      D. inventor

2. Soon she was asked to go to New York to...of the company

A. take charge      B. take on      C. take up      D. take time

3. Miss Lan was...work when I phoned her

A. at      B. over       C. with       D. to

4. In the city, going by car is not as easy as going by bike

A. In the city, going by bike is easier than going by car

B. In the city, going by car is as easy as going by bike

C. In the city, going by car is easier than going by bike

D. In the city, going by bike is not as easy as going by car

5. It isn't necessary for us to get a visa for Singapore

A. We mustn't get visa for Singapore

B. We needn't get a visa for Singapore

C. We can get a visa for Singapore

D. We shouldn't get a visa for Singapore

6. This design is not beautiful. The unsuitable colors make it ugly

A. Unless the colors were suitable, this design would be beautiful

B. Provided the colors were suitable, this design wouldn't be beautiful

C. But for the unsuitable colors, this design would be beautiful

D. If the colors were suitable, this design wouldn't be beautiful

7. You can play video games. Make sure you finish all your assignments

A. You can play video games unless you finish all your assignments

B. You can't play video games if you finish all your assignments

C. You can't play video games in case you forget to finish all your assignments

D. You can play video games provided you finish all your assignments

Cho 6,72 lít (đktc) hỗn hợp khí X gồm etilen và butadien vào dung dịch Br₂ dư, sau khi phản ứng xảy ra hoàn toàn lượng brom phản ứng hết với 64g. Tính % về thể tích etilen và butadien trong X

Bài 1: Đốt cháy 1,12 lít (đktc) hỗn hợp hai hidrocacbon X, Y đồng đẳng liên tiếp (M_X<M_Y) ta thu được 2,88g nước và 4,84g CO₂. Tính % theo thể tích của X, Y trong hỗn hợp tương ứng

Bài 2: Hỗn hợp X gồm C₂H₄, C₃H₆, C₄H₁₀, C₄H₈. Đốt cháy hết 3,2g hỗn hợp X thì thu được 4,5g H₂O. Tính % khối lượng của ankan trong X