Cho nửa đường tròn (O), đường kính BC, lấy điểm A trên cung BC sao cho AB < AC.D là trung điểm của OC, từ D kẻ đường thẳng vuông góc với BC cắt AC tại E.

a/ CM: tứ giác ABDE nội tiếp được đường tròn, xác định tâm?

b/ CM: góc BAD= góc BED?

c/ CM: CE.CA=CD.CB?

d/ Trên tia đối của tia AB lấy điểm M sao cho AM=AC. Giả sử không có điểu kiện AB<AC, tìm quỹ tích điểm M khi A di chuyển trên nửa đường tròn (O)?

Question: Complete the second sentence with the same meaning

1. Vinh keeps forgetting his homework.

-> Vinh is ..................................

2.It's a pity your friend isn't at this party.

-> I wish .........................................................

3. We started living here fifteen years ago.

-> We have ...............................................................

4. Trung's parents gave him a microcomputer on his birthday

-> Trung ......................................................................

5. He has never played a computer game before.

-> This is .............................................

6. Nga is pleased to meet her aunt again soon.

-> Nga is looking ...........................................................

7. He is too old to have more children.

-> He is so .......................................

8. "I'm very busy.I'll ring you tomorrow", Susan said to me

-> Susan ....................................................

9.Their teacher is making them to study hard.

-> They are ...........................................

10. This cheque has not been signed.

-> No ........................................

Question 4: Fill in each numbered blank with a suitable word.

If you live in a city, you probably see many people, hear the (1) .................... of traffic, and smell the pollution (2) .................................. cars and factories.We are entering a new time in (3) ....................... history of the world. Before this, most (4) .................... were farmers.They lived in the country. Now many people are leaving the farms and moving into the cities. They are looking for better jobs. THe cities are growing very quickly. Most cities are very crowded.People are driving more cars, burning more fuel, (5) ......................... more water, eating more food, making more garbage, and producing more things in factories than (6) ............................. before.Life is becoming difficult.

Some governments are trying to plan the future \. They are building new roads , putting (7) ...................... new houses, looking for more water, and limiting growth in certain areas. Still, city planners are getting worried .People are crowding into the cities (8)....................... than cities can take them. The cities are running out (9).............................. room. WHat is the answer to this problem?

Mọi người giúp em với em cảm ơn nhiều ạ!!!

Đề số 13:

Question 1: Supply the correct forms of the verbs in the brackets.

1.She felt that she (look) ........................ at.

2.I can't go out because I (not finish) .................... my homework.

3.If you kicked the policeman, you (arrest) ......................................

4.All students objected to (do) ........................... that work.

5. Trang isn't in her room at the moment. She (cook) .......................... in the kitchen.

6. I can't afford (go) ........................................ on holiday abroad this year.

7. Passengers (travel) .....................................on this bus bought their tickers in books.

8.I (not use) .................... the car this evening, so you can have it.

Question 1:Fill in each blank with one suitable word.
Most ................. the addicts are men. They come home......................... work, eat their meal quickly and then spend the evening .................... their computers. Some of them make programs, ............................ most of them just play games. Some wives say the computer is killing their marriage. Their husbands play until three ................... four o'clock ....................... the morning and all weekend. People call these lonely wives "computer windows".
When television became popular ................ the 1950s,doctors said it caused "television neck", "TV eyes" and other new illnesses. Now it is the home computer. People say it causes headaches, backaches and make their eyes tired. But worst ............... all, it is addictive. That means it is ................ drinking, smoking or taking drugs. Some people can't stop ..................... it.
Question 3:
A/ Choose the letter of the underlined portion which is not correct and correct it.
1.There's a new Oriental restaurant in town, isn't it?
2.Nam seldom pays his bills on time, and his brother too.
3.Mai didn't go to the zoo with her friends last Sunday because her sickness.
4.The water and land around the chemical factory are serious polluted.
5.Our neighbor will look for the garden when we go on holiday.
B/ Use rhe following sets of words and phrases to write complete sentences.
1.Look!/ sun/set/mountains.
->
2.I/wait/half an hour/but she/not come.
->
3.If I/be/ him/ I/choose/ English/ learn.
->
4.In/ end/ I decided/ not buy/ dictionary/ because/ too expensive.
->
5.This video film/ so interesting/ I/ see/ twice.
->
Question 4: Rewrite the following sentences, beginning each sentences with the cues.
1.Ann is good-looking and well-behaved.
- Not only ......................................
2.I think you should tell the police about the accident.
- If I ......................................
........
3."Have you hot any free time next week?" Mandy asked.
- Mandy asked ..........................................
4.She can't uave more children because of her age.
- She is too ............................................
5.The children's singing was really beautiful.
- The children sang ......................................
6. It's a cross-country vehice with five doors.
- It's a five ................................
7.I think that no city in the world is more beautiful than Paris.
- I think Paris..........................................
8.The flight to Moscow lasted three and half hours.
- It took .........................................
9. Henry regretted buying the second-hand car.
- Henry wished .........................................
10.I tried as hard as I could, but I just couldn't get the money.
- No matter .........................................