试题与答案

半径为15cm和13cm的两个圆相交,它们的公共弦长为24cm,则这个圆的圆心距

题型:选择题

题目:

半径为15cm和13cm的两个圆相交,它们的公共弦长为24cm,则这个圆的圆心距等于[ ]

A.4cm

B.4cm或14cm

C.9cm

D.9cm或14cm

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:漫画中,面对打翻的瓶子,悲观的人看到的是洒出去的,认为“全完了”,只能眼睁睁看着一点办法没有,而乐观的人则看到瓶中还剩了点,所以要去捡起来,这说明了世界观决定方法论。乐极生悲在材料...

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题型:阅读理解

阅读短文判断对错,对的画()错的画()。

       Today my family go shopping. We take a taxi to the shop. The shop is far and big. In the shop, the

women and men walk slowly. The children walk quickly. My mother buys a gift for me. My father buys a

camera. I have a sister and a brother. My brother is one year old. He learns to walk. It's hard for him to

walk. My mother helps him.

( ) l. They walk to the shop.

( ) 2. The people in the shop walk slowly.

( ) 3. My father buys film.

( ) 4. My brother is too young to walk.

( ) 5. There are five people in the family.

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