x=2

y=5

ủng hộ mk đi các bạn

Ruồi giấm có 2n = 8, số nhóm gen liên kết bằng

A. 4

B. 2

C. 8

D. 16

II. Change these sentences into the passive voice.

1. Somebody cleans the room everyday.
=> The room is cleaned everyday.

2. How do people learn English?
=> How is English learnt?

3. John will collect me at the airport.
=> I will be collected by John at the airport.

4. Mr. Robinson teaches us how to speak English properly.
=> We are taught how to speak English properly by Mr.Robinson.

5. Your teacher must sign this form.
=> This form must be signed by your teacher.

6. People play football all over the world.
=> Football is played all over the world.

7. Our form teacher will hold a class discussion next Monday.
=> A class discussion will be held by our form teacher next Monday.

8. Will you invite her to your birthday party?
=> Will she be invited by you to your birthday party?

9. We can't wear jeans at work.
=> Jeans can't be worn by us at work.

10. Do they speak French and English in Canada?
=> Are French and English spoken in Canada?

I. Rewrite the sentences, use the verbs in present passive form.

1. People can use milk for making butter and cheese.
=> Milk can be used for making butter and cheese.

2. The milkman brings bottles of milk to houses.
=> Bottles of milk are brought to houses by the milkman.

3. Careless driving causes many accidents.
=> Many accidents are caused by careless driving.

4. Weeds cover the river banks.
=> The river banks is covered by weeds.

5. People speak English all over the world.
=> English is spoken all over the world.

6. They don't use the house very often.
=> The house is not used very often.

7. Do they speak French in this school?
=> Is French spoken in this school?

8. They make a lot of beautiful toys from recycled plastic
=> A lot of beautiful toys are made from recycled plastic.

9. The workers clean the streets everyday
=> The streets are cleaned by the workers everyday.

hình như r là bán kính hay đường kính nhỉ

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