3 - 1 - 2 - 4 - 6 - 8 - 7 - 9 - 5

Dung dịch chất nào sau đây không dẫn điện được?

A. HCl trong C₆H₆ (benzen).                     

B. CH₃COONa trong nước.

C. Ca(OH)₂ trong nước.                             

D. NaHSO₄ trong nước.

Cho các chất sau: caprolactam, phenol, stiren, toluen, metyl metacrylat, isopren. Số chất có khả năng tham gia phản ứng trùng hợp là

A. 3.  

B. 4.   

C. 5.   

D. 6.

Nêu 5 giai đoạn nhân lên của virut trong tế bào.

1. It's time you reviewed your lessons for the exam.

2. That's the man who used to work with me when I lived in New York.

3. I wish they would open the shops at lunch time.

4. Although we like ice - cream, we don't have it today.

5. How long have you been working in that factory?

6. The sand od the beach was being slowly convered by oil.

7. Mrs.Smith asked where the station car-park was.

8. He regretted not saying goodbye to her at the airport.

9. If I were you, I wouldn't buy that car.

10. I suggest that you should ask her yourself.

Đề không rõ bạn ơi, phần nào A B C D vậy?

1. The

2. Up

3. To

4. So

5. Which

6. Since

7. Were

8. Could

9. Enough

10. Lesat

11. In

12. More

13. Who

14. From

15. A

Bài hay quá, nguồn từ đâu vậy bạn?

1. B

2. D

3. A

4. B

5. D

1. D

2. D

3. B

4. A

1. Made - to pay

2. Had taken - rang

3. Came - was rolling

4. Will be - writes

5. Being asked - to wait