Cho tam giác MNP vuông tại M, P=30°, đường cao MQ. Trên đoạn QP lấy điểm E sao cho QE=QN
a Chứng minh rằng tam giác MQN= tam giác MQE
b Chứng minh rằng tam giác MNE đều
c Từ P kẻ Pk vuông góc với đường thẳng ME (K thuộc ME)
Chứng minh rằng PK=MQ
d Gọi O là giao điểm của MQ và PK. Chứng minh rằng OE // NM
My father has unusual hobby, carving eggshells. As everyone knows, eggshells are very fragile. My dad can make beautiful pieces of art from empty eggshells. It’s amazing. He started the hobby five years ago after a trip to the US where he saw some carved eggshells in an art gallery. My father did not go to class to learn how to carve. He learned everything from the Internet. I am my father’ son. My name is Ba. I like carving eggshells, too.
1.What is the name of the hobby?
a. Carving eggshells b. eggshells c. carving wood
2. When did he start the hobby?
a. 4 years ago b. 5 years ago c. 6 years ago
3. Did he go to class to learn how to carve?
a. Yes, he did b. No, he did c. No, he didn’t
4. Where did he learn to carve?
a. From his friend b. from the US c. from the Internet.
1. The most popular ........................... at recess is talking. (act)
2. Many young people are doing ........................... service. (common)
3. Living in the city is ........................... than living in the countryside. (noisy)
4. If you want to have a ........................... body, you should play sports. (health)
5. We have ........................... work to do in the afternoon than in the morning. (little)
14. People living in the slums never get good healthcare, ________?
A. do they B. don’t they C. are they D. aren’t they
15. Peter wants to have _________ business trips because he has become seriously weak.
A. fewer B. less C. more D. much
16. We are looking for cheap, clean, _________ sources of energy.
A. polluting B. harmful C. expensive D. effective
17. Everyone is ready for the game, ________?
A. is it B. isn’t he? C. aren’t they D. is there
18. There ________ a bus station in the city centre, but it has been moved to the suburbs.
A. were B. used to have C. use to have D. used to be
19. I enjoy the film on TV yesterday evening __________ nobody in my family liked it.
A. so B. yet C. although D. in spite of
20. ___________ at home when I arrive at 7 a.m. tomorrow?
A. Will you stay B. Are you staying C. Do you stay D. Will you be staying
21. Have you got _______ pen, or would you like to borrow _________?
A. your - mine B. yours - my C. yours-mine D. your – my
1. The distance from my house to Ha Noi is over 20 kilometers.
→It’s………………………………………………………………………
2. My brother often watched TV in his free time last year, but he no longer does it.
→My brother used……………………………………
3. People in the countryside will use much biogas in the future.
→Much……………………………………………………………………
4. These flowers are Lan’s.
→These are…………………………………………………………………………
Many people still believe that natural resources will never be used up. Actually, the world’s energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnharm of the New England Institude of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.
However, many people do not approve of using nuclear power because it’s very dangerous. What would happen if there was a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations.
The most effective thing is that we should use natural resources as economical as possible.
Statements | T/F |
1. Natural resources will run out. | |
2. The world’s energy resources are unlimited. | |
3. We know exactly how much fuel is left. | |
4. We should use fuel economically. | |
5. According to Professor Marvin Burnham, nuclear power will be used as a substitute for natural resources. | |
6. Many people disagree to use nuclear power as an alternative energy. | |
7. Radioactivity from nuclear power causes cancer and may have bad effect on the future generations. | |
8. Natural resources should be used as economical as possible. |
1. Many ……………. (cultural/ romance/ disappointed/ annoyed) and artistic activities are held as the part of the flower festival in Da Lat.
2. Wind, hydro and solar are ………. (modern/ renewable/ non-renewable/ new) energy sources.
3. Nick washes his hand a lot, (so/ and/ but/ although) he doesn’t have flu.
4. At a seasonal festival, people race down the hill to (break/ catch/ buy/ eat) cheese.
5. (When/ How/ Why/ Where) were you born? – In March
6. We will cut down on the use of natural gas because it is …….… & harmful to the environment.
A. plenty B. limited C. available D. abundant
7. Which of the following is NOT non-renewable source of energy ?
A. oil B. wind C. natural gas D. coal
8. Some new energy-saving bulbs …………. in the dining-room.
A. will put B. will be putting C. will be put D. will being put
(3.0 điểm). Cho tam giác ABC vuông tại A, có AB = 3cm, BC = 5cm. a) Tính độ dài AC ? b) Gọi M là trung điểm của AC, Trên tia đối của tia MB lấy điểm D sao cho MB = MD. Chứng minh rằng: ABM = CDM. Từ đó suy ra AB = CD. c) Chứng minh 2.BM < AB + BC.
Many people still believe that natural resources will never be used up. Actually the world’s energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.
However, many people don’t approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible.
Answer the questions:
1. Can natural resources be used up someday?
.....................................................................................................................................................
2. What should we do if we don’t want the natural resources to run out of?
.....................................................................................................................................................
3. Why don’t people prefer using nuclear power?
.....................................................................................................................................................
4. What does the radioactivity cause for young people?
.....................................................................................................................................................
5. What will you do to protect your environment?
.....................................................................................................................................................
What Where How long Who How often How What time When |
1. ………………….are you going to do next Sunday?- Go to the zoo.
2. ………………….is Mai going to stay with? – Her grandparents.
3. ………………….do you go camping? – Once a month.
4. ………………….are they going to stay in Nha Trang? – For two weeks.
5. ………………….are you going to spend your summer vacation?-Ha Noi.
6. ………………….is she going to finish her work?- At two o’clock.
7. ………………….are you going to visit me again?- next year.
8. ………………….is Mr. Tan going to travel to Hue?- By plane.