Cho 3 điện tích điểm có q₁=q₂= 10^-8 (C) và q₃=-2.10^-8 (C) biết F_q1 và F_q2 tác dụng lên F_q3 , đặt 3 điểm A,B,C lần lượt là 3 điện tích điểm .Tính các trường hợp : (vẽ và nhận xét)

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

8. Lan and Minh are only fifteen, but they say they want to get married. I think they_______ .

A. should wait                        B. should be more careless                  C. should go to work              D. should drive fast

9. I am not Lan so I cannot help her students. If I  _______.Lan, I_________her students

A. were/ could help                 B. was/would help                  C. am/will help            D. were/will help

10. They _________ the change of the timetable yet.

A. haven’t been told               B. weren’t told                        C. aren’t told               D. hadn’t been told

11. I would have bought a new car if I  _______ enough money.

A. had had                  B. had             C. have had                 D.  would have had

12. We  _______each other  lately.

A. don’t meet              B. haven’t met                        C. didn’t meet                         D. hadn’t met

13.  Unfortunately, the excursion turned _______________ to be a disaster.

            A. for                          B. on                           C. out                          D. off

14. Without plants, most water would run  _________ as soon as it falls, taking away valuable soil.

A. of                            B. out                          C. off                          D. about

15. A: It is a lovely day. __________________for a walk?

      B: Yes, ok.

A. shall we go             B. let’s go                    C. would you like go              D. do you feel like to go

16. A: Would you like to have a cold drink?.

      B: __________________.

A. Yes, i’d love to                              B. Yes, I have.

C. Yes, I do                                        D. No, I don’t

Thuyết minh về Chiến công trên sông Bạch Đằng trong đoạn “ Trên sông các bô lão….giữ cuộc điện an” (dàn ý thui ạ)

Thuyết minh về hình tượng nhân vật khách trong đoạn “Khách có kẻ…còn lưu”. ( Em xin dàn ý thui ạ)

Rearrange the words to make a meaningful sentence.

Hoa/ had / would have / had / an excursion / on / time/ If / ,she / gone.

Rewrite the sentences

2 You should open the wine. (using passive voice).

_______________________________________________________.

3. She stays at home today because she is sick.(using the )

L_______________________________________________________.

9. He had cleaned the floor before he went out. (using passive voice)      

_______________________________________________________.

10. He is going to build a new house next week. (using passive voice)

_______________________________________________________.

IV. Choose the word whose main stress is place differently from the others.

3. a. expensive                 b. tropical             c. release              d. survival

4. a. toxic                         b. ethnic               c. explore              d. threaten