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问题 选择题

下列溶液的溶质都是强电解质，这些溶液中的Cl-浓度与150 mL 1 mol ·L－1 MgCl2溶液中的Cl-浓度相等的是                                                 （   ）

A．300mL1 mol·L－1NaCl溶液

B．75 mL 2mol·L－1CaCl2溶液

C．150mL2 mol·L－1KCl溶液

D．75 mL1mol ·L－1AlCl3溶液

答案

答案：C

题目分析：注意审清题意，要求比较Cl-浓度，而不是Cl-的物质的量，所以不用再考虑溶液的体积，因为150 mL 1 mol ·L－1 MgCl2溶液中Cl-浓度为2 mol ·L－1，只有选项C中2 mol·L－1KCl溶液中Cl-浓度为2 mol ·L－1，与之相等，C正确。

点评：审清题很关键，易混淆的是求浓度还是求物质的量，此题属于易错题型

阅读理解

The star of the Harry Potter films has become the youngest person to earn a place on the list of Britain’s richest people. Daniel Radcliffe has owned 14 million pounds, but he is only 17 now.

Thanks to Harry Potter films, Daniel Radcliffe would not have to worry about money for a very long time. He is still at school but he will never have to work in future. Money has been pouring into his company.

The youngest woman on the list is the singer Joss Stone. The 19-year-old singer has collected a fortune(财富) of about 6 million pounds.

(   ) 1. Daniel Radcliffe is ___________.

A. an actor       B. a teacher       C. a girl     D. all of the above

(   ) 2.Joss Stone is ___________ on the list.

A. the richest person                   B. the richest singer

C. the youngest singer                   D. the youngest woman singer

(   ) 3. The underlined part “on the list”means _______ in Chinese.

A. 在表格上                                B. 在排名榜上

C. 在电影界                                 D. 在艺术界
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材料分析题

世界“新七大奇迹”评选于2007年北京时间7月8日凌晨在葡萄牙首都里斯本揭晓，中国长城得票最多名列“新七大奇迹”之首。

（1）“新七大奇迹”评选进入白热化阶段后，考虑到长城可能最终被排挤出“新七大奇迹”，中国网民开始了一次大规模的网络投票行动。据统计，到投票结束之前，已经有超过4500万中国公民通过非赢利性网站www.new7wonders.com投出了自己的一票。根据材料结合所学谈谈对你的启示。 

                                                                                                                                                               

                                                                                                                                                              

                                                                                                                                                              

（2）除了中国外，世界上还有许多其他国家的人为长城投了票。面对不同的文化，他们的行为体现什么样的胸怀？

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

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