问题 填空题

鞋的尺码通常用“码”或“厘米”作单位,它们之间的换算关系是b=2a-10,(b表示码数,a表示厘米数),根据这个关系,小红的爸爸穿40码的皮鞋合______厘米,妈妈穿23.5厘米的皮鞋合______码.

答案

根据b=2a-10(b表示码数,a表示厘米数),因为小红的爸爸穿40码的皮鞋,所以:

2a-10=40,

2a-10+10=40+10,

2a=50,

a=25;

妈妈穿23.5厘米的皮鞋,所以:

2×23.5-10,

=47-10,

=37(码);

故答案为:25,37.

单项选择题
阅读理解

阅读短文,选择正确答案。

    Stephen Hawking was born in Oxford, England on 8th January, 1942. He went to school in St Albans-a small

city near London. Although he did well, he was never top of his class. After leaving school, Hawking went first

to Oxford University where he studied physics, then he went to Cambridge University where he studied

cosmology. As he himself admits (承认), he didn't work hard. He was a very lazy student, and did very little

work. However, he still got good marks.

    It was at the age of 20 that Hawking first noticed something was wrong with him. He started to bump

(撞上) into things. When he visited his family at Christmas time, his mother was so worried that she made him

see a doctor. Hawking was sent to hospital for tests. Finally, the result came back. Hawking had motor neurone

disease, an incurable illness which would make him unable to speak, breathe or move without the help of a

machine. Doctors said they had no way to help him. He would die before he was 23.

    At first, Hawking became very sad. After a while, though, he began to see his life in a different way. As he

later write, "Before my illness was diagnosed (诊断), I had been very bored with life. There bad not seemed to

be anything worth doing. But shortly after I came out of hospital, I suddenly realized that there were a lot of

worth while things I could do." Hawking married, found a job at Cambridge University, and had three children.

He also went on to do some of the most important scientific research.

    Today, Hawking still works at Cambridge University as a professor. He strongly believes that his story shows

that nobody, however bad their situation (处境) is, should lose hope. "Life is not fair, "he once said. "You just

have to do the best you can in your own situation."

1. As a university student, Stephen Hawking _______. [ ]

A. worked very hard

B. studied maths and physics

C. was the best student in his class

D. was lazy and did very little work

2. Hawking first noticed something was wrong with him when ______. [ ]

A. he was sent to hospital for tests

B. his mother made him, see a doctor

C. he was twenty years old

D. he visited his family at Christmas time one year

3. In this passage the word "incurable" means ______. [ ]

A. 无法治愈的

B. 难以确诊的

C. 常见的

D. 可以治愈的

4. When Hawking was first diagnosed with motor neurone disease, he            . [ ]

A. made up his mind to get married

B. began to see his life in a different way

C. thought that nothing in life was worth doing

D. became very unhappy

5. What would be the best title for this passage? [ ]

A. Motor Neurone Disease

B. Life is Fair

C. Professor Stephen Hawking

D. A Lazy Boy