问题 实验题

如图所示,是小刚在研究通过导体的电流跟电阻的关系时,描绘出的图像,从图像可知,小刚做实验时,加在电阻两端的电压为 ________V.

答案

5

题目分析:从图象上可以看出,当导体的电阻为5Ω时,通过导体的电流为1A,因此导体两端电压为 U=IR=1A×5Ω=5V;

点评:先从图象中读出一组准确数据,然后根据U=IR求出导体两端的电压,能找出图象中所提供的信息是本题的关键

阅读理解

阅读理解。

     Andy: I think being honest is the most important. Honesty is the best policy(原则). It is where a good

friendship(友谊) starts. Friends must be able to trust one another. If you don't tell the truth(事实), you

may lose your friends' trust. Good friends always trust in one another and do things honestly.

     Jim: Being generous(慷慨的) is important. It means sharing things with each other and sharing makes

a friendship grow. Being generous doesn't mean you have to give your lunch money or your clothes to

others. It means we share our ideas and feelings. By sharing them, we help our friends know us better.

      Mary: I think it's necessary for us to understand a friend. Everyone needs understanding. When

friends have a problem, talking about the problem can make it easier to solve. I must try to put myself

in my friend's place, so I can understand the problem and my friend better.

1. What does Andy think is the most important to make friends?

A. Being honest

B. Being generous.

C. Understanding a friend

D. Keeping a secret.

2. Jim thinks friends should share_______.

A. their ideas

B. their feelings

C. their money

D. their ideas and feelings

3. Mary tries to put herself in her_______ place to understand her friend better.

A. own

B. friend's

C. classmate's

D. teacher's

4. Friends must be able to trust one another. "trust" means_______.

A. 表扬

B. 批评

C. 反对

D. 信任

5. When friends have a problem, _______ can make it easier to solve.

A. fighting(打架)against each other

B. throwing it away.

C. talking about the problem

D. asking the friends to forgive.(宽恕)

填空题