Chon cau tra loi dung:

1. Sinca the economic....gets better, the sale of clothes increases

A. situation B. convenience C. risk D. style

2. They have....this problem in many discussions

A. talked B. rose C. mentioned D. spoke

3. The poet drew....for his poems from his surroundings

A. raising B. running C. pulling D. going

4. I often play soccer....weekends

A. on B. in C. about D. at

5. Lan wishes she.....have to clean all the windows

A. don't B. doesn't C. wasn't D. didn't

6. Yesterday we went on a....to Cu Chi tunnel

A. picnic B. trip C. sightsee D. camping

7. The village lies near the....of a mountain and by a river

A. feet B. leg C. shin D. foot

8. It took us two hours to.....the village by bus

A. come B. reach C. get D. arrive

9. If she....time, she will write to you

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

10. If you want to lose weigh, you.....go on strict diet

A. can B. could C. should D. may

11. If Mary doesn't improve in English, we....have to find a tutor for her

A. will B. can C. should D. would

12. You....pass the driving test, if you follow the instructor's advice

A. must B. can C. could D. shall

13. If you study hard, you...the exam

A. would B. will C. must D. should

14. He sais he.....to visit me the following day

A. will come B. would come C. came D. come

15. He asked me where I....now?

A. live B. lived C. would live D. had lived

16. I asked his brother how he....to school

A. goes B. go C. will go D. went

17. Do you...any foreign language?

A. talk B. say C. speak D. tell

18. What time does your English class....and end?

A. start B. open C. leave D. get

19. I can complete a.....English test if you want

A. speak B. spoke C. speaking D. spoken

20. We have well-.....teachers

A. qualifications B. qualified C. to qualify D. quality

21. Email can be sent and received at any hour of the day,....?

A. can they B. can it C. can't it D. can't they

22. Everything is all right,.....?

A. is it B. isn't it C. are they D. aren't they

23. Everyone has read the latest news on the website,....?

A. haven't they B. hasn't he C. don't they D. doesn't he

24. Let's go to the cinema tonight,....?

A. don't we B. let we C. shan't we D. shall we

25. Nobody is here....?

A. aren't they B. is he C. are they D. isn't he

26. Does your father hate......rock music?

A. to listen B. listening C. listened D. listen

Bài 1: Nguyên tử Na có 11 proton, 12 nooo7tron, 11 electron thì khối lượng mol của nguyên tử Na bằng bao nhiêu?

Bài 2: Hạt nhân nguyên tử X có điện tích là \(30,4.10^{-19}\) culong. Số proton của nguyen tử X là?

Luc 6 gio mot doan tau tu Ho Chi Minh di Nha Trang voi van toc 45km/h. Sau khi chay duoc 40 phut thi tau dung lai o mot ga trong 10 phut. Sau do tiep tuc chay voi van toc bang luc dau. Luc 6gio 50phut mot o to khoi hanh tu Go Chi Minh di Nha Trang voi van toc 60km/h. Coi chuyen dong cua o to va doan tau la thang deu

a) Lap phuong trinh chuyen dong cua tau va cua xe ke tu luc xe bat dau chay va tim vi tri, thoi diem xe duoi kip tau

b) Ve do thi chuyen dong cua tau va o to tren cung mot he truc toa do

c) Can cu vao do thi xac dinh vi tri va thoi diem o to duoi kip tau

Tinh:

a) Ti khoi hoi cua \(N_2\) doi voi khong khi

b) Ti khoi cua hon hop chua 3,36 lit khi \(H_2\) va 8,96 lit khi \(N_2\) so voi heli? V (dktc)

Hoa tan hoan toan 5,5g hon hop gom Al va Fe bang dung dich HCl 14,6% thu duoc 4,48lit \(H_2\) (dktc)

a) Tinh thanh % ve khoi luong cua moi kim loai trong hon hop

b) Tinh nong do % cac muoi co trong dung dich sau phan ung

Cho m(g) bot Fe tac dung vua du voi 250ml dung dich HCl 2,0 M (du) sinh ra V(l) khi o dktc

a) Tinh m, V

b) Tinh nong do mol/l dung dich muoi tao thanh

Bng phuong phap hoa hoc nhan biet cac chat sau:

a) CaO, \(CaCO_3\)

b) HCl, NaCl, NaOH, \(Ba\left(OH\right)_2\)

Khoi luong cua 11,2 lit hon hop khi A gom \(SO_2\) va \(SO_3\) (dktc) la 38,4g

a) Tinh ti khoi cua A so voi \(H_2\)

b) Tinh the tich moi khi trong 4 lit hon hop khi A

c) Tinh % ve khoi luong moi chat trong hon hop A

Tinh:

a) Tinh khoi luong dung dich thu duoc khi cho 0,1 mol \(Al_2\left(SO_4\right)_3\) vao nuoc duoc dung dich \(Al_2\left(SO_4\right)_3\) 20%

b) Tron 2 mol \(H_2O\) voi 1 mol \(H_2SO_4\). Dung dich axit thu duoc bao nhieu nong do phan tram

c) Tron 100ml dung dich \(H_2SO_4\) 4M voi 300ml dung dich \(H_2SO_4\) 1M. Tinh nong do mol cua dung dich thu duoc?

Tu hai dia diem A va B cach nhau 100km/h co hai xe cung khoi hanh luc 8 gio sang, chay nguoc chieu nha theo huong den gap nhau. Xe tu A co van toc \(v_1\)=30km/h va xe tu B co van toc \(v_2\)=20km/h

a) Hai xe gap nhau luc nao va o dau?

b) Neu xe tu B khoi hanh luc 6 gio thi hai xe gap nhau luc nao va o dau?