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Số lượng câu hỏi
383
Số lượng câu trả lời
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Điểm SP
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Người theo dõi (12)
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Chủ đề:
Chương II - Đường trònCâu hỏi:
Cho nửa đường tròn (O) đường kính AB điểm M thuộc đường tròn. Vẽ điểm N đối xứng với A qua M. BN cắt đường tròn ở C.Gọi E là giao điểm của AC và BM
a,CMR: NE vuông góc với AB
b, Gọi F là điểm đối xứng với E qua M. CMR: FA là tiếp tuyến (O)
c,CM: FN là tiếp tuyến của đường tròn (B;BA)
d,CM: BM . BF = BF2 - FN2
Chủ đề:
Chương II - Đường trònCâu hỏi:
Cho đường tròn đường kính AB. Qua C thuộc nửa đường tròn kẻ tiếp tuyến d với đường tròn. Gọi E,F lần lượt là chân đường vuông góc kẻ từ A,B đến d và H là chân đường vuông góc kẻ từ C đến AB. Chứng minh:
a,CE = CF
b, AC là phân giác của góc BAE
c, CH2 = BF . AE
Chủ đề:
Chương II - Hàm số bậc nhấtCâu hỏi:
Cho hai đường thẳng: (d1): \(y=\dfrac{1}{2}x+2\) và (d2) \(y=-x+2\)
a,Vẽ (d1) và (d2) trên cùng một hệ trục tọa độ Oxy
b,Gọi A và B lần lượt là giao điểm của (d1) và(d2) với trục Ox,C là giao điểm của (d1) và(d2). Tính chu vi và diện tích của tam giác ABC(đơn vị trên hệ trục tọa độ là cm)?
Chủ đề:
Review 1 (Units 1- 2- 3)Câu hỏi:
Bill Gates is the co-founder of Microsoft, the world’s largest PC software company. He is among the richest people in the world. Bill Gates’ interest in computers started when he was a teenager. After high school, he was accepted to several top colleges in the USA: Harvard, Yale, and Princeton. He chose to go to Harvard to study law. At Harvard, he focused more on his interest in computer than on coursework. He often relaxed by playing video games in Harvard’s computer lab. He left Harvard before graduating because he wanted to open a software company with his friend Paul Allen. However, he later said, “ I don’t think dropping out is a good idea.” In 2007, he received an honorary degree from Harvard. He began his speech by saying this to his father in the audience. “I’ve been waiting more than 30 years to say this: Dad ,I always told you I’d come back and get my degree.” Bill Gates is no longer working full time for Microsoft. He is now, with his wife, running The Bill & Melinda Gates Foundation which aims to improve healthcare, reduce poverty, and promote education around the world. 1. When did Bill Gates first develop his interest in computers? A. during his teenage years B. when he went to university C. when he was at nursery school 2. What did he study at Harvard University? A. computer science B. business C. law 3. What did he often do to relax while at Harvard? A. play sports B. play video games C. go to parties 4. What did he receive from Harvard in 2007? A. an honorary degree B. a job C. a company
Chủ đề:
Review 1 (Units 1- 2- 3)Câu hỏi:
Choose the correct option A, B, c, or D for each gap in the passage. Homelessness is a problem in many big cities in the world. It occurs when a part of the population does not have any (1)__________ place to call home. Hundreds of millions of people in the world spend at least some time of the year homeless. This is an issue that the authorities are trying to (2)__________. However, there are (3)__________ things that each person can do to help those people. One of the things that you can do to help the homeless is to volunteer your time. If you have a lot of free time, you might go on an extended trip to help (4)__________ homes or improve an impoverished area. Even with just a few hours a week, it is possible to make an impact in your own city. You can also sign up to help at a (5)__________ soup kitchen: most cities have a mission of some kind (6) __________ food to the homeless and offering temporary shelter. 1. A. common B. regular C. unusual D. fixed 2. A deal with B, get over C look through D. find out 3. A. little B. less C. more D. fewer 4. A. care for B, show around C. set up D. pull down 5. A. urban B. central C. capital D. local 6. A. cooking B. supporting C. helping D. serving
Chủ đề:
Review 1 (Units 1- 2- 3)Câu hỏi:
Choose the correct answer A, B, C , or D to complete the letter. Dear Elisa, Thanks very much for your email. It was fun to read about the places you find interesting. I (1) ______ like going to museums in my free time. There are several museums in my city, but I like the Museum of Fine Arts the most. I love art, so (2) ______ I have free time, I go to this museum. There's a great mix (3) ______ art from across the eras, including some really impressive modern Vietnamese paintings. What I especially like about the museum is that (4) ______ of its galleries have an introduction in Vietnamese, English, and French. It (5) ______ that I can learn lots of English while enjoying the art works. Another place of interest that I love is the (6) ______ park. It’s near my house, so I go there almost every day. Sometimes I go for a walk around the park with my mother. Sometimes I choose a beautiful place in it to sit and draw some sketches. And sometimes I just sit (7) ______ a bench, doing nothing, just watching people passing by. It’s really relaxing. I hope someday I’ll have a(n) (8) ______ to visit your National Portrait Gallery and Hyde Park. Until the next email, Mi 1.A.don’t like B.interested in C.also D.will 2.A.because B.though C.that D.when 3.A.in B.of C.on D.with 4.A.all B.one C.none D.not 5.A.means B.shows C.proves D.tells 6.A.locality B.small C.area D.local 7.A.in B.at C.on D.with 8.A.chance B.opportunity C.time D.choice
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Complete the second sentence so that it has a similar meaning to the first.
1. Ba can’t speak English well.
Ba wishes ……………………………………………………………………
2. They grow rice in tropical countries.
Rice ………………………………………………...
3.“I will go to my village next week” Mr.Nick said.
Mr. Nick said ………………………………………………………………
4. My father likes playing soccer every morning.
My father is interested……………………………………………………………
5. She worked hard. She passed her exam .
She worked ………………………………………………………………………
6.I don’t have a new car.
I wish ................................................................................................................
7. They will build a new supermarket here.
A new supermarket ............................................................................................
8. I don’t have a car.
Iwish ………………………………………..………………………………………….…..
9.People speak English all over the world.
English ……………………………………..………………………………………….…..
10. Keeping the environment clean is very important.
It’s ………………………………………..………………………………………….…..
11. Nam cleaned the room yesterday.
The room …………………………………………...............……………………………….
12. They have just built a new bridge in the area.
A new bridge …………………………………………………...…….......………….…….
13. How about going to the beach this weekend ?
Shall we………………………….....…………………………………………….………
14. He had a headache, but he still went to work.
Although………………………………….…………………...…......…………………………
15. She started working as a secretary five years ago.
She has………………………………………………………………………………………….
16. Because of his broken leg, he didn’t take part in the contest yesterday
Because his……………………………………………………………………….……………
17. Despite the bad weather, we went out for a picnic.
Although………………………………………………………………………………………..
18. People grow rice in tropical countries.
Rice ..............................................................................................................................................
19. I spend three hours doing my homework everyday.
-> It takes ................................................................................................................
20.My father likes watching television every night.
-> My father enjoys ………………………………………………………...........
21.She dreams to spend her vacation in Ha Long Bay.
->She wishes……………………………………………………….………………….……..…
22. He had a lot of money, but now he doesn't.
->He used…………………………………………………………………………………..……
23.Scientists have discovered that there is water on Mars.
-> It has been …………………………………………………………………….……………..
24.We expect the professor will arrive this morning.
->It is expected ………………………………………………………………………..…….…