试题与答案

如图在托盘天平两边各放一只烧杯,调节至平衡.往右边烧杯里注入一定量的稀硫酸,左边

题型:填空题

题目:

如图在托盘天平两边各放一只烧杯,调节至平衡.往右边烧杯里注入一定量的稀硫酸,左边烧杯里注入相同质量的盐酸.

(1).两边烧杯里各投入少量相同质量的锌粒,锌粒完全溶解后,天平指针有何变化?______.为什么?______.

(2).左边投入少许锌粒,右边投入相同质量的镁条,锌、镁完全溶解后,天平指针有何变化.______.为什么?______.

答案:

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My parents quarreled a lot, and I was really worried about it. I didn’t know who I should talk with about how I was feeling. So I asked Mom to allow me to stay the night at my best friend’s house. Though I knew I wouldn’t tell her about my parents’ situation, I was looking forward to getting out of the house. I was packing up my things when suddenly the power (电) went out in the neighborhood. Mom came to tell me that I should stay with my grandpa until the power came back on.

I was really disappointed(失望的) because I felt that we did not have much to talk about. But I knew he would be frightened alone in the dark. I went to his room and told him that I’d stay with him until the power was restored(恢复). He was quite happy and said.

“Great chance.”

“What is?” I asked.

“To talk, you and I,” he said. “To hold a one-to-one little meeting about what we’re going to do with your mom and dad, and what we’re going to do with ourselves and the situation we are in now.”

“But we can’t do anything about it, Grandpa,” I said, surprised that here was someone with whom I could share my feelings and someone who was in the same “boat” as I was.

And that is how the most amazing friendship between my grandfather and me started. Sitting there in the dark, we talked about our feelings and fears of life from how fast things change to how they sometimes don’t change fast enough. That night, because the power went out, I found a new friend, with whom I could safely talk about all my fears and pains, whatever they may be.

Suddenly, the lights all came back on. “Well,” he said, “I guess that means you’ll want to go now. I really like our talk. I hope the power will go out every few nights!”

小题1:Why was Grandpa happy to see the writer?

A.Because he felt quite lonely.

B.Because he could discuss the problem with him.

C.Because he was afraid of darkness.

D.Because he had not seen him for a long time.小题2:In which order(顺序) did the story happen?

a. The lights came back on.

b. The writer went to his grandpa’s room and stayed with him.

c. The power in the neighbourhood suddenly went out.

d. The writer worried about the parents’ disagreement and wanted to leave his home.

e. The writer had a talk with his grandpa and started the most amazing friendship between them.

A.d-b-e-c-a

B.a-b-e-c-d

C.c-d-b-e-a

D.d-c-b-e-a小题3:What can be inferred(推断) from the story?

A.The lights would go out again.

B.The writer wanted to leave very much.

C.They would have more chats.

D.It would no longer be dark.

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