试题与答案

按要求改写下列句子 1. She has studied English for

题型:句型转换

题目:

按要求改写下列句子

1. She has studied English for three years. (改为一般疑问句)

    ______ she______ English for three years?

2. My brother has been a tour guide for two years. (对画线部分提问)

    ______ your brother been a tour guide?

3. Anna likes pop songs. I like them ,too.(改为同义句)

    Anna likes pop songs. ______  ______ I.

4. My sister has never learned French .I have never learned it, either. (改为同义句)

    ______ I ______ my sister ______ learned French.

5. The student bought the English book two days ago. (用现在完成时改写)

    The student ______ ______ the English book ______ two days ago.

6. Is the Science Museum open at weekends?(改为宾语从句)

    Could you tell us ______ the Science Museum ______ open at weekends?

7. To protect the environment is important.(改为同义句)

    It is important ______ the environment.

8. This bag is not the same as that one.(改为同义句)

    This bag is ______ ______ that one.

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:根据已有化学知识分析。A.燃烧是一种剧烈的发热、发光的化学反应,但发热、发光的不一定是燃烧,如灯泡通电也发光发热,就属于物理变化,错误; B.单质是由一种元素组成的物质,但由一种元素...

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题型:问答题

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①滑动摩擦力大小可能与压力大小有关.

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(1)如图用弹簧测力计沿水平方向______拉动苹果醋,使它沿水平桌面滑动,弹簧测力计的示数如图所示,则摩擦力的大小为______N.

(2)实验中是如何改变压力的:______,并控制______不变.

(3)在实验中小明沿水平方向由匀速拉动苹果醋改为加速拉动,苹果醋所受摩擦力______(填“变大”、“变小”或“不变”).

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