题目内容

【题目】喜马拉雅山脉是世界上最高大的山脉,至今它还在不断升高的原因是

A.亚欧板块和印度洋板块不断张裂B.印度洋板块不断挤压亚欧板块

C.非洲板块和印度洋板块不断张裂D.非洲板块不断挤压印度洋板块

【答案】B

【解析】

根据地质学家经过长期研究,又提出了板块构造学说。板块构造学说认为,地球岩石圈是由板块拼合而成的。全球主要有六大板块,其中太平洋板块几乎全部是海洋,其余板块既包括大陆,又包括海洋。海洋与陆地的相对位置是不断变化的,进行分析解答。

一般来说,板块的内部比较稳定,板块与板块交界的地带,有的张裂拉伸,有的碰撞挤压,地壳比较活跃;喜马拉雅山位于印度洋板块与亚欧板块的交界地带,印度洋板块不断挤压亚欧板块,致使喜马拉雅山脉不断升高。故选:B

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【题目】 I saw Tom Sawyer on the way to the town. When he saw me he looked frightened. “Huck! Why have you come back to scare me? I never hurt you,” he said. “I haven 't come back. Tom. I've never been away.”

“Aren't you a ghost?”

“No, it was a trick.” I said.

Then I told him that I wanted to rescue(营救) Jim—a slave(奴隶).

“I'll help you,” Tom replied excitedly. He loved an adventure more than anything else in the world.

When we got back to the farm, Tom said that he was Sid, Tom's younger brother. Aunt Sally was surprised to see him but was happy to have his two nephews(侄子).

That night, Tom and I went out to look for Jim. There were lots of huts in the garden. One of the huts was locked. So we guessed Jim was locked in the hut. We dug a tunnel under the wall of the hut that night. Finally, we succeeded. Jim was very surprised to see us.

“Hello, Jim!” Tom said. “But we aren't ready to do it yet, you'll have to wait a couple of days.” “Don't worry! you'll soon be free!”

Then we came back and talked about a plan to get away.

“I'm going to write a letter to Uncle Silas,” Tom said.” “Of course I won't sign it. It'll be anonymous(匿名的). I’m going to warn him that somebody's planning to steal the runaway slave .”I didn't understand why we had to look for trouble but I didn't say anything. “Well, Huck, if Uncle Silas knows, he'll try to stop the thieves,” says Tom.

So Tom wrote the letter and I put it under the front door. Uncle Silas found it in the morning. After reading it, he went out at once. At night, we successfully rescued Jim. We are very happy because Jim is a free man now. Though Tom got a bullet(子弹)in my leg, it was a great adventure.

1Who likes a great adventure best?

A. JimB. Uncle SilasC. HuckD. Tom Sawyer

2Why does Tom look frightened when he sees Huck on the way?

A. Because he thinks Huck is a bad man.

B. Because Huck is really a ghost.

C. Because he thinks Huck has died in his father's cabin.

D. Because he thinks Huck will tell Aunt Sally about everything.

3What’s Tom’s purpose of writing a letter?

A. In order to let Uncle Silas know his rescue methods.

B. In order to make the adventure more exciting.

C. In order to ask Aunt Sally to set Jim free.

D. In order to get Uncle Silas to rescue Tom.

4What theme does the passage show?

A. Rules and order.B. Education and social.

C. Freedom and slaveryD. Man and nature

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