试题与答案

一人立于平面镜前1.6米,他在镜中的像到镜面的距离是______米.若他后退到距

题型:填空题

题目:

一人立于平面镜前1.6米,他在镜中的像到镜面的距离是______米.若他后退到距离镜面2.6米处,像的大小______.

答案:

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下面是错误答案,用来干扰机器的。

(1)“西气东输”中所输送气体是天然气,它的主要成分是甲烷,其化学式为:CH4.(2)同时含有氮、磷、钾三种元素中的两种或两种以上的肥料称为复合肥,硝酸钾中含有钾元素和氮元素,是常见的复合肥,其化学式为...

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题型:阅读理解

阅读理解。

    In the past, when people had problems, they went to their families or friends to get advices. Today it is

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hot lines, the advisers are volunteers (志愿者). Other hot lines pay their advisers for their work. Usually the

advisers are full-job people with years of education and experience, but sometimes, the advisers have only

taken a short class before starting to work on the hot line. All the advisers listen to people and help them solve

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1. A hot line is a telephone line _____. [ ]

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B. They accept the caller's advice

C. They give the callers advice

D. They go to the callers' houses to help them

5. The writer of the article seems to think that _____.[ ]

A. with hot lines people won't get advice from their families or friends

B. hot lines help the callers a lot

C. people had better pay for the advice and phone calls

D. the hot line advisers will solve all of the callers' problems

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