下表是生活中某种常见金属M的部分性质：颜色、状态硬度密度熔点导电性导热性延展性

发布时间：2017-06-16 00:32 │ 来源：www.tikuol.com

题型：填空题

问题：

下表是生活中某种常见金属M的部分性质：

颜色、状态	硬度	密度	熔点	导电性	导热性	延展性
银白色固体	较软	2.70g/cm³	660.4℃	良好	良好	良好

将金属M投入盐酸中，有大量无色气泡生成．根据上述信息回答以下问题：

（1）试推断金属M可能的一种用途：______．

（2）将金属M放入硫酸铜溶液中，可观察到的现象为______，若假设金属M在化合物中的化合价为+3价，用M表示该反应的化学方程式为______．

（3）请自选试剂，设计实验探究金属M与铁的活动性强弱，并完成下表：

你的一种猜想	操作	现象	结论
			假设成立，该金属活动性比铁强

考点：金属活动性金属的化学性质

题型：填空题

完形填空。

     The Taj Mahal is India's most famous building. It is known    1   the eighth wonder of the world. It
also    2    a great love story.
     In the year 1607, Emperor Shah Jahan of India    3   a girl in a market. She was so beautiful    4   he
fell in love with her at once. The girl's name was Mumtaz Mahal.
     Five years later, Mumtaz and Shah Jehan got married. They had 14 children.    5   Mumtaz died in 1630.
Shah Jahan missed his wife so much that in 1638, he ordered the building of    6    beautiful mausoleum
(陵墓) on earth for her, the Taj Mahal.
     It    7   22,000 workmen 22 years to finish. The beautiful white marble (大理石) building stands beside
the Yamuna River. It has expensive stones    8   its walls. By the way, to visit the Taj Mahal, you'll have to
take off your shoes and leave them at the front door.

( )1. A. as
( )2. A. speaks
( )3. A. sees
( )4. A. if
( )5. A. And
( )6. A. the more
( )7. A. took
( )8. A. in

B. for
B. tells
B. seeing
B. that
B. But
B. the most
B. takes
B. on

C. to
C. says
C. saw
C. as
C. Or
C. much
C. taking
C. with

D. at
D. talks
D. seen
D. while
D. So
D. quite
D. take
D. at

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题型：填空题

在△ABC中，a，b，c分别是角A，B，C所对的边，∠A=60°，a=4

，则B等于（　　）

A．45°或135°

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题型：填空题

二十世纪中国社会发生的第一次历史性巨变是 ( )

A．1911辛亥革命推翻了封建帝制

B．1919五四运动

C．1915新文化运动开始了新民主主义革命

D．1949中国新民主主义国家的诞生

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题型：填空题

该病人最可能的诊断是

A．肠结核并发肠穿孔
B．溃疡性结肠炎并发中毒性巨结肠
C．结肠癌并发肠梗阻
D．肠易激综合征
E．克罗恩病

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题型：填空题

易破碎的药材应使用坚固的箱盒包装；（）应使用特殊包装，并应贴上相应的标记。

A.毒性

B.精神类

C.麻醉性

D.贵细药材

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