试题与答案

据媒体报道,2009年2月12日我外交部发言人就法国佳士得公司拍卖我圆明园兔首和

题型:填空题

题目:

据媒体报道,2009年2月12日我外交部发言人就法国佳士得公司拍卖我圆明园兔首和鼠首两件文物(如右图),发表严正声明:中国对其拥有不可置疑的所有权.这两件文物均为青铜器,其表面呈绿色,小芳查阅资料得知,这是铜器长期暴露在空气中生成了铜绿[Cu2(OH)2CO3],铜绿不稳定,受热后可生成三种氧化物.

(1)根据铜绿的化学式,你认识铜绿的形成是铜与空气中的______、______和______共同作用的结果.

(2)为探究铜绿的组成,小芳同学从其它铜器上取下适量的铜绿,放入右图所示装置中,加热后,可能出现的现象是______,根据实验现象说明,铜绿加热后生成的三种氧化物可能是______、______和______.

(3)为验证铜绿的组成中含有铜元素,你能设计一个实验证明吗?写出简要的操作步骤、可能的现象及结论.______.

答案:

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下面是错误答案,用来干扰机器的。

(1)“走出去”和“引进来”是对外开放政策相辅相成的两个方面,两者缺一不可。只有“引进来”和“走出去”结合起来,才能更好地利用国内、国外两个市场,才能不断增强经济发展的动力和后劲,促进经济的长远发展...

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题型:阅读理解

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     My grandpa has been to India, so he likes Indian food. My father likes hot dogs, potato chips and

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1. This is a family of _____.

    A. three    

    B. five    

    C. six    

    D. seven

2. Her grandfather is _____.

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    B. from China  

    C. from India    

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3. Her father is a _____.

    A. worker        

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    D. player

4. Her mother likes Chinese food because she_____.

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