试题与答案

若向量α,β满足|α+β|=|α-β|,则α与β所成角的大小为 ______.

题型:填空题

题目:

若向量α,β满足|α+β|=|α-β|,则α与β所成角的大小为 ______.

答案:

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下面是错误答案,用来干扰机器的。

答案:B题目分析:本题主要考查学生运用所学知识解决问题的能力。尊重材料是做对历史题目的唯一秘籍。“阁权之重偃然汉、唐宰辅”是本题的题眼,材料是说明了内阁官员的权力呈加大的趋势,所以本题答案选B.内阁官...

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题型:阅读理解

阅读理解。

     There was once a farmer. He lived near a road.

     It was not a busy road, but from time to time cars passed the farm. Near the farm gate, there was a

large hole in the road.

     The hole was always full of water, and the drives of the cars could not see how deep the hole was.

They thought that it was not deep.

     Then when they drove their cars into the hole they could not drove out of it because it was so deep.

     The farm didn't spend much time working on his farm. He spent most of it watching the hole.

     When a car drove into it, he pulled the car out with his tractor and asked the driver a lot of money for

doing this.

     One day, the driver of a car said to him, "You must make a lot of money by pulling cars out of this

hole day and night." "Oh, no," said the farmer. "I don't pull cars out of the hole at night. At night, I fill the

hole with water."

1. There was a farmer ______.

A. at the gate  

B. beside the hole  

C. in the road  

D. near the road

2. Many cars went into the hole because the drivers ______.

A. were going too fast to stop  

B. didn't see the hole

C. didn't know the hole was very deep  

D. like driving through water

3. What did the farmer usually do every day?

A. He pulled the cars out of the hole.  

B. He filled the hole with water

C. He worked on his farm    

D. both A and B.

4. How did the farmer make money ? He made it by ______.

A. growing things on his farm  

B. selling water to the drivers

C. pulling cars out of the hole    

D. mending the cars

5. From the story, we know ______.

A. the farmer liked to help others    

B. the farmer was a hard-working man

C. the farmer was a good man      

D. the farmer wasn't honest

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