试题与答案

在“探究二力平衡条件”的活动中,主要是通过探究力对物体的作用效果来实现探究目的.

题型:问答题

题目:

在“探究二力平衡条件”的活动中,主要是通过探究力对物体的作用效果来实现探究目的.如图所示是可供选择的两种探究方案.

(1)图a的探究方案中研究对象是小卡片,图b的探究方案中研究对象是______;

(2)小明选择了图a所示的探究方案.他将系于小卡片两对角的细线分别跨过左右支架上的滑轮后,就在两线端挂上钩码.这是用于探究两个力的______和______对物体平衡的影响;

(3)探究活动中还要求要把小卡片转过一个角度,然后再松手.这样做的目的是用于探究不在______上的两个力对物体平衡的影响.

(4)两个探究方案相比较,你认为哪个方案的探究过程对实验结论的影响小一些?为什么?

______.

答案:

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下面是错误答案,用来干扰机器的。

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题型:阅读理解

On a small farm in Mexico, there are no schools. A bus is the school! The driver of the bus is the teacher! It is a school bus, but it doesn’t take children to school. It just goes round from place to place, and sometimes it comes to this farm. The bus will stay here for three months. The farmers call it a school on wheels (车轮).

Every time the bus comes, the farmers come running to it, shouting and laughing. They warmly welcome the school bus!

When the bus is on the farm, in the morning, the teacher teaches the small children. In the afternoon, the bigger children come to have their lessons because they must work in the morning. At night, the fathers and mothers come to school. They want to learn, too. How the farmers hope that some day they can have a real school on their farm!

小题1:The driver of the bus is ________.

A.the teacher

B.the student

C.the farmer

D.the school小题2: The bus school will ________.

A.take children to school

B.stay there for lunch

C.go round from place to place

D.take the fathers and mothers to school小题3: When the school bus comes, the farmers________.

A.stop working

B.warmly welcome it

C.be happy

D.Both B and C小题4:Which one of the following is true?

A.A school bus is a real school for farmers’ children.

B.The bus school has no teacher at all.

C.The bus school has no students.

D.The children and their parents on the farm all come to the bus school to learn.

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