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“用微粒的眼光看世界”，是我们学习化学的重要思想方法．试根据以下材料，结合你所学知识，简要回答问题： 材料一：微波炉的工作原理是利用微波穿透食物达5cm深，使食物中的水分子产生高频率震动，并摩擦，产生大量的热量，达到运动式加热或烹饪食物的目的． 材料二：一滴水里大约有15万亿亿个水分子，如果10亿人来数一滴水里的水分子，每人每分钟数100个，日夜不停，需要数3万多年才能完成． 材料三：某同学在课后做如图所示的实验：在一个玻璃容器中加入100mL水，向水中放入一块糖，立即在容器外壁沿液面画一水平线，过一会儿发现糖块溶解，液面比原来水平线降低了． （1）材料一说明______； （2）材料二说明______； （3）材料三说明______； （4）请谈谈你对“分子是保持物质化学性质的最小粒子”这句话的认识：______．
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【单选题】The role of and treatment of the housewife, which is really the major bone of contention in social security reform, has, of course, a major place in feminist thought. Betty Friedan's book, The Feminin...
A.
should not assume the roles of housewives at all
B.
men should share homemaking with their wives
C.
no other roles should be offered to women than being housewives
D.
women should assume the roles of housewives only temporarily
【单选题】The role of and treatment of the housewife, which is really the major bone of contention in social security reform, has, of course, a major place in feminist thought. Betty Friedan's book, The Feminin...
A.
should not assume the roles of housewives at all
B.
men should share homemaking with their wives
C.
no other roles should be offered to women than being housewives
D.
women should assume the roles of housewives only temporarily
【单选题】Which of the following can be concluded about the attitude of the surlier’s friend?
A.
She fully supported the author,
B.
She thought the author was polite enough.
C.
She thought the Palm Court was the only place for the author.
D.
She considered feminine politeness more important than other things.
【简答题】（12分）已知函数 ， （1）求函数 的导数； （2）设曲线 在点（1，f（1））处的切线为 ，若 与圆 相切，求a的值； （3）若函数 在 上是增函数，求a的取值范围．
【单选题】Which place of the following is not on the 30 degrees of north latitude:
A.
Island of Atlas
B.
The Mayan
C.
Bermuda Triangle
D.
Pyramid of Khufu—Sphinx
E.
Mount Qomolangma
F.
The Yangtze Three Gorges
G.
the Dead Sea
【简答题】把相等的积分连在一起
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