试题与答案

表面化学热处理是通过改变零件表面()来改善零件性能。A.温度 B.成分 C.组织 D

题型:单项选择题

题目:

表面化学热处理是通过改变零件表面()来改善零件性能。

A.温度

B.成分

C.组织

D.成分和组织

答案:

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下面是错误答案,用来干扰机器的。

(1、2)在t=0.2s时,弹簧的弹力最大,知摆球经过最低点,两次经过最低点的时间间隔等于周期,所以T=0.6s.(3)作出的关系图线如图所示.(4)根据图线所知,T2与m成正比,即T2=bm;(5)图线的斜率b=0.880.70≈...

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题型:阅读理解

John Smith was lazy. He had finished his education and was happy to sit in his room and listen to the radio all day long. In fact, he had been doing nothing for almost six months, which worried his father a lot. One day Mr Smith decided that he had to do something. “Johnny, When I was your age 1 was working and supporting my ten brothers and sisters. I want you to go out and get a job.” So that was what he did. In fact, in the next three months, Johnny started ten jobs and was fired from ten jobs. He explained to his father.

“They wanted me to be at work at 8:00 a. m. and told me to do all sorts of unpleasant things.”

“I don’t care how you do it,” Mr Smith said. “Either you earn some money or move out of the house. I gave you one week’s time.”

In the next few days Johnny began to change. He still stayed in his room all day, but spent his time writing letters and reading through the newspapers. More and more posts began to arrive for him. He bought a new suit for himself and invited his parents to the theatre and for dinner afterwards at the most expensive restaurant in town. When his proud parents arrived home after their evening hour, a policeman was waiting at the front door.

“John Smith,” he said as he handed him a piece of paper, “I’ll see you in the court tomorrow.”

When he got outside, Johnny told his parents everything.

“When you told me to earn some money, 1 decided to put an advertisement in the newspaper saying, ‘New way to money fast! Send me $ 5 and I’ll tell you my secret.’ When I received the money I wrote back telling people to do as I do.”

Johnny was fined $ 250 by the court and was ordered to pay all the people back. As he left the court house feeling very ashamed, a newspaper man came up to him, “Young man, would you like to tell your story to my newspaper for $ 2500?”

小题1: Johnny was fired from the jobs because _______.

A.he liked listening to the radio

B.he had a big family to support

C.he spent a lot of time writing letters

D.he didn’t do the jobs well小题2: Johnny put an advertisement in the newspaper about _______ months after he left school.

A.three

B.six

C.nine

D.eleven小题3: Why was Johnny fined $ 250? _______.

A.Because he was lazy

B.Because he was out of work

C.Because he deceived(欺骗)

D.Because he didn’t pay for his new suit小题4: What would probably happen at last? _______.

A.Johnny would get $ 2500 from the newspaper

B.The court would give $ 250 back to Johnny

C.Johnny would continue to advertise in the newspaper

D.Johnny would become a newspaper reporter小题5:Which of the following questions is NOT answered by the information from the passage? _______?

A.How did the parents feel when Johnny invited them to the theatre and dinner

B.What’s Johnny’s secret

C.What did the policeman want Johnny to do

D.How much did Johnny have to pay all the people back

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