题目内容

【题目】随着科学技术的不断进步,一种新型锁——“声纹锁已经面世,只要主人对着声纹锁说出事先设定的暗语,它就会自动打开,别人即使说出相同的暗语也打不开,这种声纹锁辨别声音主要是依据( )

A.音色B.响度C.音调 D.声速

【答案】A

【解析】

试题分析:音色:发声体的声音品质,由发声体本身的特征决定.是区别声音的重要标志.只要主人对着声纹锁说出事先设定的暗语,它就会自动打开,别人即使说出相同的暗语也打不开,是由于主人的音色与其他人的不同。

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【题目】I spent an hour writing out all the invitations to my daughter's classmates.She told me who said they were coming.We spent so much time and money making gifts.“Tina would love the sunglasses,and Mike would love this pencil…” Jenny said.She helped me make cupcakes,60 of them with different colors and tastes.

Everything was ready.At four,it started to rain.And it didn't seem to stop soon.“Will they come at five?” Jenny asked me.She looked worried.I was not sure,either.We sat on the sofa and waited.At 4:50,Lisa,Jenny's best friend arrived.We were both happy and welcomed her.Until 5:20,seven of thirty classmates came.

I thought Jenny would be sad.“I'm happy today,Mom,” Jenny told me after the party was over.“It was rainy, but some of my classmates still came.I know who are my real friends.”

“Yes,it's the most important thing,” I said.

1Who is the writer of the passage?

A. Jenny. B. Jenny's mother.

C. Jenny's teacher. D. Jenny's classmate.

2What is the first paragraph mainly talking about?

A. The party invitations.

B. The party preparations.

C. The guests at the party.

D. How to make cupcakes.

3Why was Jenny worried?

A. Something was not ready for the party.

B. Her classmates didn't love the gifts.

C. Her classmates might not come because of the rain.

D. There weren't enough cupcakes for her classmates.

4How did Jenny feel about the party?

A. She was sad.

B. She was happy.

C. She was surprised.

D. She was tired.

5What does the passage tell us?

A. Real friends always support (支持) us.

B. It's not easy to have a birthday party.

C. Never believe what others said easily.

D. Don't try to be friends with everyone.

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