Đột biến số lượng NST có thể xảy ra ở các dạng tế bào nào?

1. It isn’t necessary to finish the work to day.

You don’t ………………………………………………………………………………………………………………..

2. Sally finally managed to get a job.

Sally finally succeeded ……………………………………………………………………………………………..

3. That’s the last time I go to that restaurant.

I certainly………………………………………………………………………………………………………..

4. "I advise you to take a holiday," the doctor continued.

You’d …………………………………………………………………………………………………………………….

5. If you don’t rest yourself you really will be ill.

Unless …………………………………………………………………………………………………………………….

6. I should like someone to take me out to dinner.

What I should ………………………………………………………………………………………………………………

7. Martin may not be very well but he still manages to enjoy life.

Martin’s poor ………………………………………………………………………………………………………………….

8. They’ll have to take the dog on holiday with them.

They can’t leave ………………………………………………………………………………………………………………

9. My aunt got heavily stressed because her marriage broke up.

The break-up of the marriage …………………………………………………………………………………….

10. I can’t believe that he passed the exam.

I find……………………………………………………………………………………………………………….

1.When did you first know him?

How …………………………………………………………………………………………………………………….

2.Their trip lasted three day.

They had …………………………………………………………………………………………………………………….

3.It may rain hard this afternoon, so take the rain coat with you.

In case …………………………………………………………………………………………………………………….

4.She had to do the washing up but she didn’t.

She forgot……………………………………………………………………………………………………………

5.English id easy to learn.

It …………………………………………………………………………………………………………………….

6.Don’t leave the lights on all night, you will waste electricity.

If …………………………………………………………………………………………………………………….

7.The furniture was too old to keep.

It was …………………………………………………………………………………………………………………….

8.Gary is the best guitarist in her class.

No one else …………………………………………………………………………………………………………………….

9.Since the invention of computer, people have saved a lot of time.

Since the computer was ……………………………………………………………………………………………………………

10.It’s necessary for everybody to clean up their neighborhood once a week.

Everybody …………………………………………………………………………………………………………………….

1. He can’t afford to buy the car.

The car………………………………. ……………………………………………………………………

2. Shirley didn’t begin to read until she was eight.

It wasn’t………………………………. ………………………………………………………………………

3. Mrs. Taylor regretted buying the second –hand washing-machine.

Mrs. Taylor wished………………. ……………………………………………………………………

4. Nobody can deny that she has a beautiful voice.

It………………………………………………. …………………………………………………………….

5. Jane is the tallest girl in her class .

Nobody…………………………………………. …………………………………………………………….

6. They couldn’t find the manager anywhere .

The manager was……………………… ……………………………………………………………………

7. Their teacher is making them study hard .

They ………………………………………… ……………………………………………………………

8. As I get older , I want to travel less.

The older ………………………………… …………………………………………………………………

9. I have never been to Liverpool in my life .

Never …………………………………………….. ………………………………………………………..

10.My father speaks very little French .

My father speaks hardly …………………………. ………………………………………………….. .

1.This is the fastest way to get to the city center.

There ……………………………………………………………………
2. If anyone succeeds in solving the problems, it will probably be him.

He is the most ………………………………………………………………
3. We arrived too late to see the first film.

We didn’t ……………………………………………………………
4. ”Would you mind not smoking in here?”

I’d rather ………………………………………………………………

5. He wrote the letter in two hours.

It took …………………………………………………………………

6. ”Why don’t we go out for a walk?”

My father suggested ………………………………………………………

7. In spite of his age, Mr. Benson runs 8 miles before breakfast.

Though ……………………………………………………………………………

8. I was very interested in our conversation.

It was interesting ……………………………………………………………
9. Why did you do that ?

Whatever ………………………………………………………………………?

10. These bookshelves are my own work.

I made …………………………………………………………………………

1: Rerwite the following sentences that keep the same meaning.

1. He was very sorry that he didn't see Andrey on her trip to London.

He greatly regretted.....................................................................................

2. It's thought that the accident was caused by human error.

The accident is ...........................................................................................

3. "Will you be visiting the Taj Mahal when you go to India?" he asked Elizabeth.

He asked .................................................................................................

4. "Ithink you should try the chicken Marengo," said the waiter.

The waiter recommended ........................................................... ..................

5. This is the most delicious cake I have ever tasted.

I have ........................................................................................... ......

2: Rerwite the following sentences that keep the same meaning.

1. The questions are so easy that everyone can answer them.

They're such ................................................................................................

2. The boy will receive some money to continue his study. His parents died in a traffic accident

The boy whose ..........................................................................................................

3. They are producing motorbikes in Vietnam.

Motorbikes are ..............................................................................................

4. I wasn't there yesterday, so I didn't know who he was.

If I ............................................................................................................

5. If you do not try hard, you can't pass the examination.

Unless .........................................................................................................

6. They spent more money, they had to work harder.

The more .....................................................................................................

7. People thought that the cover was made of iron.

The cover ....................................................................................................

8. He went to London. He had lived there when he was a boy.

He went to London where ..................................................................................

9. Jane was absent from class because of her sickness.

Because Jane was ............................................................................................

10. The package was too heavy for Peter to carry.

The package was so ..........................................................................................

3: Rerwite the following sentences that keep the same meaning.

1. You should take the train instead of the bus.

If .....................................................................................................

2. I'm sure that someone forgot to lock the door.

Someone must .....................................................................................

3. They bought this house ten years ago.

They have .........................................................................................

4. The course finished with a big party.

At the end .........................................................................................

5. We invited a pop star onto the chat show, but he didn't turn up.

The pop star ......................................................................................

6. Although she said that she would come, I don't think she ever will.

Despite .................................................................................................

7. The plane had hardly left the airport when the accident happened.

No sooner ..........................................................................................

8. You feel tired now because you didn't sleep very well last night.

Had .................................................................................................

9. When did you start the project?

How long ..........................................................................................

10. Their wedding will be held in a lovely church.

The church .........................................................................................

4: Rerwite the following sentences that keep the same meaning.

1. My father used to play football when he was young.

My father doesn't ........................................................................................

2. Jane gave me a present on my last birthday.

I was .......................................................................................................

3. "Let's go swimming"

She suggests ..............................................................................................

4. "Would you like a cup of coffee?"

He .........................................................................................................

5. We got lost in the jungle because we didn't have a map.

If we had .................................................................................................

6. I last saw Bob when I was in Ho Chi Minh City.

I haven't seen ............................................................................................

7. It is a three-hour drive from Hanoi to Namdinh.

It takes .................................................................................................

8. It's a pity you didn't tell us about this.

I wish .....................................................................................................

9. They think the owner of the house is abroad.

The owner ................................................................................................

10. The children couldn't go swimming because the sea was very rough.

The sea was too ......................................................................................

Exercise 1: Rerwite the following sentences that keep the same meaning.

1. This is the fastest way to get to the city center.

There ....................................................................................................................................................................................

2. If anyone succeeds in solving the problems, it will probably be him.

He is the most ..................................................................................................................................................................

3. We arrived too late to see the first film.

We didn't ............................................................................................................................................................................

4. "Would you mind not smoking in here?"

I'd rather ...............................................................................................................................................................................

5. He wrote the letter in two hours.

It took .....................................................................................................................................................................................

6. "Why don't we go out for a walk?"

My father suggested ............................................................................................................................................................

7. In spite of his age, Mr. Benson runs 8 miles before breakfast.

Though .................................................................................................................................................................................

8. I was very interested in our conversation.

It was interesting ......................................................................................................................................................

9. Why did you do that ?

Whatever .......................................................................................................................................................................?

10. These bookshelves are my own work.

I made ...............................................................................................................................................................................

Exercise 2: Rerwite the following sentences that keep the same meaning.

1. I don't play tennis as well as you do.

You .....................................................................................................................................................

2. I haven't been to the dentist's for two years.

It's ......................................................................................................................................................

3. Whenever she went to Paris she bought a new dress.

She never .........................................................................................................................................

4. I spent seven years at secondary school and then I went to university.

After ..................................................................................................................................................

5. It's not worth living to make her change her mind.

There's ............................................................................................................................................

6. He said he was not guilty of stealing the car.

He denied .........................................................................................................................................

7. Is this the only way to reach the city centre?

Isn't there .........................................................................................................................................?

8. He never suspected that the money had been stolen.

At no time ...........................................................................................................................................

9. It's my opinion that you should take more exersise.

If I...........................................................................................................................................................

10. I was going to leave, but because of what he said, I didn't.

She persuaded .....................................................................................................................................

1/ Cho 2 bóng đèn có ghi Đ₁ (110V - 25V)

Đ₂ (110V - 45V)

Hai bóng đèn này được mắc nối tiếp vào nguồi điện 220V.

a) Tính điện trở và cường độ dòng điện định mức của mỗi đèn.

b) Hỏi 2 đèn sáng như thế nào?

c) Để đèn sáng bình thường người ta mắc thêm R_x . R_x mắc như thế nào? Vì sao?

d) Tính giá trị R_x và điện năng tiêu thụ trên R_x trong 20 phút.

2/ Cho 2 bóng đèn có ghi Đ₁ (6V - 6V)

Đ₂ (9V - 6V)

Hai bóng đèn này được mắc nối tiếp vào nguồi điện 15V.

a) Tính điện trở và cường độ dòng điện định mức của mỗi đèn.

b) Hỏi 2 đèn sáng như thế nào?

c) Để đèn sáng bình thường người ta mắc thêm R_x . R_x mắc như thế nào? Tính giá trị R_x ?

I/ Complete these sentences with the correct form of the verb in brackets

1.Jane wishes she…………………(know) how to dance.

2.I wish my parents…………………(not/work) on Saturdays.

3.Have you ever wish you………………… (can fly) as a bird?

4.We all wish we…………………(have) more money, do not we?

5.I wish i………………… (live) in a big city. It is so boring in the country.

6.The boys wish they………………… (be) tall enough to play basketball.

7.I wish the teacher………………… (not/be) going to give an exam tomorrow.

8.Mai knows a little English, so she wish she…………………(can speak) it fluently.

9.I wish the sun…………………(shine) right now so that we could go swimming.

10.I wish I………………… (wear) a coat now, It is so cold today.

II/ Fill in each blank with the correct preposition

1.How long is she planning to stay………………………you?

2.We haven’t seen Jane………………………a while.

3.I walked ………………………several hotels ………………………my way………………………the gas station.

4.The young birds depend………………………their parents for food several weeks.

5.This job is a lot different ………………………what I’m used to.

6.Most students are interested………………………sports.

7.The teacher divided the class………………………five groups.

8.His breakfast consists ……………………… dry bread and a cup of tea.

9.Their yard is separated………………………the factory………………………a tall fence.

10.………………………Friday, Maryain wanted to visit the mosque ………………………Hang Luoc Street.

III/ Complete the second sentence so that it has a similar mailing to the first

1.My sister has played the piano for five years.

My sister started……………………………………………………………..

2.Our dog bit the postman.

The postman……………………………………………………………..

3.Im sorry that I dont know what to do about the pioblem

I wish……………………………………………………………..

4.Mary wrote her composition hours and hours ago.

It’s hours……………………………………………………………..

5.When I was a child we lived in Bristol

We used……………………………………………………………..

6.My friend won the race.

My friend was……………………………………………………………..

7.I would like you to help me move this table.

Do you mind……………………………………………………………..

8.She’s sorry she can not play the piano

She wishes……………………………………………………………..

9.I don’t normally have coffee for breakfast.

I am not used……………………………………………………………..

10.It was breakfast-time when Susan rang.

I was……………………………………………………………..

I/ Complete these sentences with the correct form of the verb in brackets

1.Jane wishes she…………………(know) how to dance.

2.I wish my parents…………………(not/work) on Saturdays.

3.Have you ever wish you………………… (can fly) as a bird?

4.We all wish we…………………(have) more money, do not we?

5.I wish i………………… (live) in a big city. It is so boring in the country.

6.The boys wish they………………… (be) tall enough to play basketball.

7.I wish the teacher………………… (not/be) going to give an exam tomorrow.

8.Mai knows a little English, so she wish she…………………(can speak) it fluently.

9.I wish the sun…………………(shine) right now so that we could go swimming.

10.I wish I………………… (wear) a coat now, It is so cold today.

II/ Fill in each blank with the correct preposition

1.How long is she planning to stay………………………you?

2.We haven’t seen Jane………………………a while.

3.I walked ………………………several hotels ………………………my way………………………the gas station.

4.The young birds depend………………………their parents for food several weeks.

5.This job is a lot different ………………………what I’m used to.

6.Most students are interested………………………sports.

7.The teacher divided the class………………………five groups.

8.His breakfast consists ……………………… dry bread and a cup of tea.

9.Their yard is separated………………………the factory………………………a tall fence.

10.………………………Friday, Maryain wanted to visit the mosque ………………………Hang Luoc Street.

III/

1.My sister has played the piano for five years.

My sister started……………………………………………………………..

2.Our dog bit the postman.

The postman……………………………………………………………..

3.Im sorry that I dont know what to do about the pioblem

I wish……………………………………………………………..

4.Mary wrote her composition hours and hours ago.

It’s hours……………………………………………………………..

5.When I was a child we lived in Bristol

We used……………………………………………………………..

6.My friend won the race.

My friend was……………………………………………………………..

7.I would like you to help me move this table.

Do you mind……………………………………………………………..

8.She’s sorry she can not play the piano

She wishes……………………………………………………………..

9.I don’t normally have coffee for breakfast.

I am not used……………………………………………………………..

10.It was breakfast-time when Susan rang.

I was……………………………………………………………..

I/ Fill in the blank with Inf without to or V-ing

1. I used to ____ Bach Mai primary school.(attend)

2. Did you used to ____ a lot of sweets when you were a child.(eat)

3. Jack is used to____to school every morning.(go)

4. I didn't used to_____ opera,but now I'm getting interested.(like)

5. I used to ____ Kuala Lumpur when my parents were alive.(visit)

6. My father often goes to the seaside on Sunday, so I get used to ____ pure air there.(enjoy)

7. He used to____ tennis a lot, but now he's too lary.(play)

8. I always come to my uncle's farm so I get used to____ new born calves.(feed)

9. She's lived in Paris for 6 years now, so she's quite used to____ in the big city.(drive)

10. My brother is good at ____ things.(fix)

11. He used to____ pipe, didn't he? (smoke)

12. The knife is used to____ fuit.(cut)

13. Did you used to ____ in the morning? (swim)

14. Life here is much easier than it used to_____. (be)

15. We are used to ____ up early.(get)

I. Write sentences beginning I wish…

1.I dont know many people in the town.

............................................................................................

2.It would be nice to be able to fly a plane.

……………………………………………………………………

3.It’s a shame that I can not stop smoking.

……………………………………………………………………

4.Ann isn ‘t here and I need to see her.

……………………………………………………………………

5.I do not like being so short.

……………………………………………………………………

6.Unfortunately, I have to work tomorrow.

……………………………………………………………………

7.I am not lying on a beach in Hawaii.

……………………………………………………………………

8.Im sorry I can not go to the party.

……………………………………………………………………

9.I’d like to get access to the Internet but I don’t have a computer.

……………………………………………………………………

10.It’s a pity the weether isn’t better today.

……………………………………………………………………

Bài 1: Cho 10g hỗn hợp gồm Zn và Cu tác dụng với dung dịch axit H2SO4 loãng thì thu được 2,24 lit H2 (đktc). Tính thành phần % về khối lượng của mỗi kim loại trong hỗn hợp ban đầu.

Bài 2: Hoà tan 5,2g hỗn hợp gồm Mg và Fe bằng dung dịch axit HCl 1M, thì thu dược 3,36 lit H2 (đktc).

a/ Tính thành phần % theo khối lượng mỗi kim loại trong hỗn hợp.

b/ Tính thể tích dung dịch axit HCl đã dùng.

Bài 3: Cho một lượng hỗn hợp gồm Ag và Zn tác dụng với lượng dư dung dịch axit H2SO4, thu được 5,6 lit khí H2 (đktc). Sau phản ứng thấy còn 6,25g một chất rắn không tan. Tính thành phần % về khối lượng mỗi kim loại trong hỗn hợp.

Bài 4: Hoà tan hoàn toàn 15,3g hỗn hợp gồm Mg và Zn bằng dung dịch axit HCl 1M thì thu được 6,72 lit H2 (đktc).

a/ Xác định khối lượng mỗi kim loại trong hỗn hợp đầu.

b/ Tính thể tích dung dịch axit HCl cần dùng.

Bài 5: A là hỗn hợp gồm: Ba, Al, Mg.

Lấy m gam A cho tác dụng với nước tới khi hết phản ứng thấy thoát ra 3,36 lit H2 (đktc).

Lấy m gam A cho vào dung dịch xút dư tới khi hết phản ứng thấy thoát ra 6,72 lít H2 (đktc). Lấy m gam A hoà tan bằng một lượng vừa đủ dung dịch axit HCl thì thu được một dung dịch và 8,96 lit H2 (đktc).

Hãy tính m gam và thành phần % theo khối lượng của mỗi kim loại trong hỗn hợp.

Bài 6: Hoà tan hỗn hợp gồm Fe, Zn trong 500ml dung dịch HCl 0,4M được dung dịch A và 10,52g muối khan.

a/ Tính thành phần % theo khối lượng mỗi kim loại.

b/ Tính thể tích dung dịch B gồm NaOH 0,02M và Ba(OH)2 cần dùng để trung hoà dung dịch A.

Bài 7: Hoà tan hết 12g hỗn hợp A gồm Fe và kim loại M (hoá trị II không đổi) vào 200ml dung dịch HCl 3,5M thu được 6,72 lit khí (đktc). Mặt khác lấy 3,6g kim loại M tan hết vào 400ml dung dịch H2SO4 nồng độ 1M thì H2SO4 còn dư.

a/ Xác định kim loại M.

b/ Tính thành phần % theo khối lượng của Fe, M trong hỗn hợp.

Bài 8: Hoà tan hết 11,3g hỗn hợp A gồm Fe và kim loại R (hoá trị II không đổi) vào 300ml dung dịch HCl 2,5M thu được 6,72 lit khí (đktc). Mặt khác lấy 4,8g kim loại M tan hết vào 200ml dung dịch H2SO4 nồng độ 2M thì H2SO4 còn dư.

a/ Xác định kim loại R.

b/ Tính thành phần % theo khối lượng của Fe, R trong hỗn hợp.

Bài 9: Hoà tan hết 12,1g hỗn hợp A gồm Fe và kim loại M (hoá trị II không đổi) vào 150ml dung dịch HCl 3M thì thu được 4,48 lit khí (đktc). Mặt khác muốn hoà tan hết 4,875g kim loại M thì cần phải dùng 100ml dung dịch H2SO4 0,75M, dung dịch thu được không làm đổi màu giấy quỳ.

Bài 10: Hỗn hợp A gồm Mg và kim loại M hoá trị III, đứng trước hiđrô trong dãy hoạt động hoá học. Hoà tan hoàn toàn 1,275 g A vào 125ml dd B chứa đồng thời HCl nồng độ C1(M) và H2SO4 nồng độ C2(M). Thấy thoát ra 1400 ml khí H2 (ở đktc) và dd D. Để trung hoà hoàn toàn lượng a xít dư trong D cần dùng 50ml dd Ba(OH)2 1M. Sau khi trung hoà dd D còn thu được 0,0375mol một chất rắn không hoà tan trong HCl.

a/ Viết các PTPƯ xảy ra.

b/ Tính C1 và C2 của dd B.

c/ Tìm NTK của kim loại M (AM) và khối lượng mỗi kim loại trong hỗn hợp A đem thí nghiệm.

Biết rằng để hoà tan 1,35g M cần dùng không quá 200ml dd HCl 1M.

Bài 11: Cho 9,86g hỗn hợp gồm Mg và Zn vào 1 cốc chứa 430ml dung dịch H2SO4 1M loãng. Sau khi phản ứng hoàn toàn, thêm tiếp vào cốc 1,2 lit dung dịch hỗn hợp gồm Ba(OH)2 0,05M và NaOH 0,7M, khuấy đều cho phản ứng hoàn toàn, rồi lọc lấy kết tủa và nung nóng đến khối lượng không đổi thì thu được 26,08g chất rắn. Tính khối lượng mỗi kim loại trong hỗn hợp đầu.