B1:Cho 13 gam kẽm cháy hoàn toàn trong không khí, sau phản ứng thu được chất rắn là kẽm oxit (ZnO).

a) Viết phương trình phản ứng đã xảy ra.

b) Tính thể tích khí O2 đã tham gia phản ứng ở điều kiện chuẩn.

c) Tính khối lượng kẽm oxit thu được sau phản ứng. (Nguyên tử khối: Zn=65, O=16)

abcd : abcd = 1

tk mk nha bn

EXERCISE 1:

1. Clement Clarke Moore wrote the poem in 1823.

> The poem _______________________________________________________

2. Nobody has used this machine for years.

>This machine_____________________________________________________

3. They use recycled plastic to make toys and utensils.

> Recycled plastic___________________________________________________

4. Peter taught Nam to drive on the left in England.

> Nam ____________________________________________________________

5. My father waters this flower every morning.

> This flower_______________________________________________________

6. John invited Fiona to his birthday party last night.

> Fiona____________________________________________________________

7. We should clean our teeth twice a day.

> Our teeth_________________________________________________________

8. Our teachers have explained the English grammar.

> The English grammar_______________________________________________

9. Some drunk drivers caused the accident in this city.

> The accident______________________________________________________

10. Tom will visit his parents next month.

> His parents_______________________________________________________

11. The manager didn’t phone the secretary this morning.

> The secretary_____________________________________________________

12. I won’t hang these old pictures in the living room.

> These old pictures_________________________________________________

13. How many languages do they speak in Canada?

> How many languages_______________________________________________

14. Are you going to repair those shoes?

> Those shoes______________________________________________________

15. Have you finished the above sentences?

> The above sentences_______________________________________________

EXERCISE 2:

1. “ I’m very hungry, Mom,” the boy said

> The boy told ______________________________________________________________

2. “We are waiting for the school bus”, said the children.

> The children said ___________________________________________________________

3. “ Your new shirt is very nice, Nam.” Hoa said.

> Hoa told__________________________________________________________________

4. “I work for a small publishing company”

> She said__________________________________________________________________

5. He said to us ,“ My wife cooks very well . ”

> He told _________________________ ____________________________________________

6. “ I’m going to Hai Phong next week , mother.” she said.

> She told___________________________________________________________________ ____

7. They said to me, “ We must finish these exercises now ”.

> They told ________________________________________________________________

8. He said “ I can’t do this test ”.

> He said__________________________________________________________________

9. She said to me “ I will go to China next week”

> She told __________________________________________________________________

10. He said “ I need these books.”

> He said___________________________________________________________________

11. He said to me “ I must finish these works on time”

> He said __________________________________________________________________

12. He said “I like traveling by car”

> He said___________________________________________________________________

13. They said “We will finish the test tomorrow”

> They said__________________________________________________________________

14. They said to him “ We are learning English now”

> They told_________________________________________________________________

15. They said “ We don’t like eating this food.”

> They said_________________________________________________________________

Exercise:

1. Will you turn down the TV, please?

Do/Would you mind ______________________________________________________?

2. Could I smoke?

Do you mind if __________________________________________________________?

3. Shall I drive?

Would you mind If _______________________________________________________?

4. Is it all right if I take a photo ?

Would you mind _________________________________________________________?

5. Can I use your hand phone?

Do you mind if __________________________________________________________?

6. May I ask you a question?

Do you mind if __________________________________________________________?

7. Could you lend me some money?

Would you mind ________________________________________________________?

8. Could you open the windows?

à Do you mind____________________________________________________________?

9.Can you bring me some shampoo?

Would you mind ________________________________________________________?

10. Could you give me a hand? Do you mind____________________________________________________________?

Exercise:

1. The old lamp is five dollars. It is made in China.

® The old lamp __________________________________________________________

2. The boy is Ba. He is reading a book.

® The boy ______________________________________________________________

3. The girl is Nga. She is playing chess with Hoa.

® The girl_______________________________________________________________

4. The toys are ten dollars. They are kept in the box. The toys ______________________________________________________________

5. The man is my uncle. He wrote this poem.

The man ______________________________________________________________

6. My family is living in a house. The house was built in 2004.

My family _____________________________________________________________

7. The boy will be punished. He broke the shop window. The boy_______________________________________________________________

8. The chickens are very fat. They are raised on our farm. The chickens___________________________________________________________

9. I didn’t talk much to the man. The man was sitting next to me on the plane to Ha Noi.

I didn’t talk____________________________________________________________

10. The doll is 2 dollars. It is dressed in a pink dress.

The doll_______________________________________________________________

Exercises1: Finish the second sentence so that it has the same meaning as the first.

1. People speak French and English in Canada. .

àFrench and English ______________________________________________________

2. Bell invented the telephone in 1876. .

à The telephone __________________________________________________________

3. People send Christmas cards a week before Christmas day.

àChristmas cards__________________________________________________________

4. Many people in the world speak English.

à English ________________________________________________________________

5. The workers clean the streets every day.

à The streets______________________________________________________________

6. They cancelled all flights because of the jog.

à All flights_______________________________________________________________

7. Clement Clark Moore wrote the poem in 1823.

à The poem______________________________________________________________

8. I won’t hang these old pictures in the living room.

à These old pictures_________________________-______________________________

9. People should clean our teeth twice a day.

à Our teeth _____________________________________________________________

Exercise 2: Finish the second sentence so that it has the same meaning as the first.

1. This river is dangerous to swim

è It’s .............................................................................................. ……………………..

è Swimming ................................................................................. ……………………..

2. It’s difficult to remember all the students’names in many classes.

è To remember …………………………………………………………………….

è Remembering ……………………………………………………………………

3.It’s interesting to see that film

è To see ……………………………………………………………………………

è Seeing …………………………………………………………………………..

4.It’s hot to drink that tea cup.

è To drink …………………………………………………………………………

è Drinking …………………………………………………………………………

5.This reading text is not easy to understand.

è It’s ……………………………………………………………………………….

è To understand …………………………………………………………………...

è Understanding …………………………………………………………………...

Exercise3: Multiple choice

1. Milk bottles can be __________ after being cleaned. (recycled / thrown away / broken / reused)

2. Car tires can __________to make pipes and floor coverings. (be recycled/ recycled / recycling / recycle)

3. After about 15 minutes, __________ arrived and she was taken to the hospital. (a truck / taxi / ambulance / emergency)

4. It’s not easy __________ these questions. ( to answer / answering / answer / answered)

5. We were delighted_____________ your letter last week. ( to get / getting / got / get)

6. Garbage can be used to make _____________. ( fertilizer / fertilizing / fertile / fertilization)

7. The new hotel _____________ next year. ( is opened / will be opened / is opening / opens)

8. It’s dangerous _____________ near the streets. ( play / to play / playing / plays)

9. Milk _____________to houses by milkman every day. ( brings / is bring / is brought / is bringed)

10. Milk bottles can be _____________ after being cleaned. ( recycled / broken / reduced / reused)

11. _____________ means not buying any products which are overpackaged. ( Reuse / Reduce / Recycle/ Reorder)

12. Farmers use the dung for _____________ their fields. ( compost/ fertilizing / wasting/ collecting)

13. People throw _____________ billions of drink cans every year all over the world. ( away / over / out / off)

14. There must be a _____________on all drink cans. ( compost / fertilizer / deposit/ glassware)

M.n giúp em với ạ!