Thực hiện phép tính

M= 1 + (-2) + 3 + (-4) +......+ 2001 + (-2002) + 2003

Tính tổng các số nguyên x, biết -15≤x<17

Complete the sentences, using a relative pronoun

1. These are the books. I use them in the class

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2. That's the name. I couldn't remember it yesterday

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3. The film is about two people. Their plane crashed in the jungle

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4. The film is about a king. Hi ambition was to rule the world

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5. They are the people. I was talking about them

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6. That is the tunnel. I went through it

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7. He's the criminal. The police are looking for him

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8. My flat is in an old part of the city. It was built in the 1920s

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9. There are lots of bars and restaurants in the neighbourhood. I live in the neighbourhood

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10. My neighbourhood comes from Ecuador. He works on the fruit farms around the city

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complete the sentences, using a relative pronoun

1. The pub is opposite the Town Hall. I first met my wife there

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2. He was sitting on a chair. It was uncomfortable

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3. He smokes cigarettes. They are very strong

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4. Let me see the pictures. You took them at Peter's wedding

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5. Some people only think about money. I don't like them

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6. Do you know that lady? I repaired her car

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7. That girl is Swedish. Tom is in love with her

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8. John has bought a house. There are ghosts in that house

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9. Some people drive drunk. I never travel with them

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10. A man stole £10,000 from a bank. The police have caught him

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11. I bought bananas this morning. I have lost them

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1. He is only one boy......in this game

A.who participating

B.participated

C.to participate

D.who participate

2. I was introduced to a man......brother is my teacher

A.which

B.whose

C.that

D.whom

3. Swimming is the sport......you move through water in a horizontal position using the arms and legs

A.which

B.who

C.that

D. A and C

4. The United States consists of fifty states,......has its own goverment

A.they each

B.each of which

C.hence each

D.each of that

5. It doesn't matter to them which film they go to

A.whatever films are shown, they never see

B.they don't care about the cost of the films they see

C.which film they go to matters more than the cost

D.they don't mind which film they go to

Cho điểm B nằm giữa 2 điểm A và C, điểm C nằm giữa 2 điểm B và D. Chứng tỏ rằng:

a) Hai tia BA, BD đối nhau

b) Hai tia CA, CD đối nhau

Trên hình có 9 điểm. Không nhấc bút khỏi giấy, hãy vẽ 4 đoạn thẳng đi qua tất cả 13 điểm đó

Cho 5 điểm A, B, C, D, E thuộc đường thẳng a

a) có bao nhiêu bộ ba điểm thẳng hàng?

b) có bao nhiêu trường hợp một điểm nằm giữa hai điểm khác?

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