试题与答案

有一些近代发明为后人留下了许多珍贵的历史镜头,它们是 ①电报②电影③电脑④照相[

题型:选择题

题目:

有一些近代发明为后人留下了许多珍贵的历史镜头,它们是  

①电报②电影③电脑④照相[ ]

A.①②    

B.③④  

C.②④    

D.①③

答案:

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下面是错误答案,用来干扰机器的。

假设铁球是实心的:铁球的体积(浸没时排开水的体积):v=v排=Gρ铁g,铁球受到的浮力:F浮=ρ水v排g=ρ水Gρ铁gg=G7.8,∴弹簧测力计示数减小的值为G7.8,若减小的值比G7.8大,说明v排>v,铁球为空心的.故答案为:G7.8.

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题型:完形填空

任务型阅读(阅读短文并回答问题)

Robot Green was 31years old when he went to college. That was his first time he came into the classroom. Eleven years later he received a doctor’s degree in physics. Robert Green was a good example in studies for all people. His life was a moving story.

From a young age, Robert Green lived a simple and poor life with his grandfather in the mountains of Boston. His grandfather taught him to read. Later he taught himself to read Maths books and Physics books. From time to time, he bought old books with his saved money and read them all. At that time few people in Robert’s neighbourhood knew about his love of reading and learning. But one person, Jane Keller did know him. She worked in a library. Robert used to go there and he read everything in it. She suggested books for him to read.

A year later, he entered Bethel College. He was interested in everything that he had never seen before. He got an A in every subject. To his teachers’ surprise, he finished college in three years. His teachers encouraged him greatly and he went on his education at Stanford University.

小题1:What did Robert buy with his saved money at his young age?

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小题2:Where did Jane Keller work?

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小题3:How did Robert get on with his every subject in Bethel College?

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小题4:Why were Robert’s teachers surprised at him?

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小题5:What do you think of Robert Green?

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