问题 选择题

首先用实验的方法得出“一切运动的物体不受到外力作用时,其速度保持不变”这一正确的结论的科学家是(  )

A.阿基米德

B.帕斯卡

C.伽利略

D.牛顿

答案

17世纪意大利科学家伽利略对现实实验的基础进行了合理地推力,进行了理想化的实验,得出了运动与力的关系,即:“一切运动物体不受外力作用时,速度保持不变,永远运动下去”.牛顿在此基础上又加深了一步.

故选C.

阅读理解

阅读理解。

    "You are welcome to have dinner with me on Sunday," said John. "But I don't know where your house

 is." said Herry.

     "It's easy. You get off the bus. Then you cross the road. You take the first road on the left. You walk

  for five minutes. Then you come to a big tree. You take the second on the right after the tree. About one

  hundred meters down this road there is a big red house. You go past the big house, and after about

 hundred meters, you'll see a small yellow house beside a little tree. Open the door with your foot."

     "With my foot?" said Henry.

     "Why yes," said John, "well, you won't come to my house with empty hands, will you?"

1. From the story we know that John asked Henry _____.

    A. to go to the cinema  

    B. to have supper with Jim  

    C. to go to the bus stop

2. "You take the first on the left" means _____.

    A. go ahead on the left  

    B. take the first bus on the left  

    C. take the first road on the left.

 3. How far is it from the big tree to the big red house?

    A. about one hundred meters away.    

    B. five minutes' walk.  

    C. about five hundreds feet

4. Where was John's house? It was _____.

    A. on the right after the big house    

    B. a small yellow house  

    C. beside a little tree.

 5. Why did John asked Henry to open the door with his foot?  Because Henry _____.

    A. had no hands  

    B. was afraid to open with his hands  

    C. would carry a lot of things in his hands.

单项选择题