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2.do 16.make 29.make
3.do 17.do 30.do
4.do 18.do 31.do
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7.do 21.make 34.do
8.do 22.do 35.make
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Mai hates eating fast food because it’s not good ……her health.
a. on b. for c. at d. in
2. If you want to live long, you …… eat much red meat.
a. should b. needn’t c. have to d. shouldn’t
3. Don’t read in bed, ................ you’ll harm your eyes.
a. or b. and c. but d. so
4. When you are in the swimming pool, play _______and listen to the pool lifeguard_______
A. safe / careful B. safely / careful
C. Safe/ carefully D. safely / carefully
5. These are their books and those are_______
A. we B. our C. ours D. us
6. How _______ is it from Hanoi to Hue City ?
A. many B. long C. far D. much
7. Could you show me the way ______ the railway station please ?
A. to B. at C. next D. from
8. The boy is better _________English than I am.
A. for B. with C. in D. at
9. He looks different _________his father.
A. at B. with C. on D. from
10. _________novels are very interesting.
A. These B. This C. That D. It
II/ Choose the best answer.
Mai hates eating fast food because it’s not good ……her health.
a. on b. for c. at d. in
If you want to live long, you …… eat much red meat.
a. should b. needn’t c. have to d. shouldn’t
Don’t read in bed, ................ you’ll harm your eyes.
a. or b. and c. but d. so
4. When you are in the swimming pool, play _______and listen to the pool lifeguard_______
A. safe / careful B. safely / careful
C. Safe/ carefully D. safely / carefully
5. These are their books and those are_______
A. we B. our C. ours D. us
6. How _______ is it from Hanoi to Hue City ?
A. many B. long C. far D. much
7. Could you show me the way ______ the railway station please ?
A. to B. at C. next D. from
8. The boy is better _________English than I am.
A. for B. with C. in D. at
9. He looks different _________his father.
A. at B. with C. on D. from
10. _________novels are very interesting.
A. These B. This C. That D. It
1. Winning the football pools enabled us to buy a new car.
2.There is no use in calling Kim, because his phone is out of order.
3. The decorators managed not to make too much mess.
4. When is the last time you have a haircut?
5. I derive pleasure from collecting stamps.
6. Don't put off going to dentist's.
34. Why don‘t you go with me? he asked me.
-> He asked ....why I don't go with him...........................................................
Hok toost
Phản ứng: 2NOCl(g) -> 2NO(g) + Cl2(g)
Biểu thức tính tốc độ trung bình (vtb):
vtb = - (1/2) * (Δ[NOCl] / Δt) = - (1/2) * ([NOCl]t2 - [NOCl]t1 / (t2 - t1))
vtb = + (1/2) * (Δ[NO] / Δt) = + (1/2) * ([NO]t2 - [NO]t1 / (t2 - t1))
vtb = + (1/1) * (Δ[Cl2] / Δt) = + (Δ[Cl2] / Δt) = + ([Cl2]t2 - [Cl2]t1 / (t2 - t1))
Tổng hợp lại, biểu thức đầy đủ là:
vtb = - (1/2) * (Δ[NOCl] / Δt) = + (1/2) * (Δ[NO] / Δt) = + (Δ[Cl2] / Δt)
Trong đó: