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问题 选择题

对物理量的估测，是一种良好的学习习惯，也是学好物理的基本功之一，下面是王红同学对自己身体相关物理知识的估测，明显不合理的是（　　）

A．体温大约为37℃

B．手指甲的宽度约为1.0cm

C．体重大约为50N

D．她的步行速度约为1.1m/s

答案

答案：C

解：A、正常人的体温为37℃，正确，不合题意．

B、手指甲的宽度约为1.0cm，正确，不合题意．

C、中学生体重为500N，错误，符合题意．

D、人步行的速度为1.1m/s，正确，不合题意．

故选C

阅读理解

Answer the questions according to the passage you read.

A great French writer said that we should help everyone as much as we can, because we often need help ourselves. Sometimes the small can help the great. And he told the following story.

An ant was drinking by a small river and fell in. She tried her best to reach the bank(岸), but she couldn’t move at all. The poor ant got too tried but was still doing her best. Then a big bird saw her. The bird threw a piece of wood into the water. With it the ant reached the bank again. While she was resting and drying herself on the grass, she heard a man coming up. The man was walking with a gun(枪) in his hand. As soon as he saw the bird, he wanted to kill her. But the ant bit(咬) him on one of his feet and at the moment the bird flew away at once.

The ant saved the bird’s life.

小题1: According to the French writer, we often need help from others, so what should we do?

                                                     

小题2:What does the sentence “we often need help ourselves”?

                                                      

小题3:Why did the ant couldn’t reach the bank when it fell into the river?

                                                      

小题4:Though the poor ant was too tried, what did she do？

                                                      

小题5:请将画线句子翻译成汉语。

                                                       
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多项选择题

在架空电力线路杆塔工程施工时，用外拉线抱杆组立铁塔工作中应遵守（）等规定。

A.升降抱杆必须有统一指挥

B.抱杆垂直下方不得有人

C.抱杆倾斜角不宜超过25º

D.塔上人员应站在塔身外侧的安全位置上

E.起吊和就位过程中，吊件外侧应设控制绳
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