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问题 选择题

除去下列各组物质中的杂质，所选用的试剂及操作方法均正确的是（括号内的物质为杂质，所选试剂均足量）[ ]

选项物质选用试剂及方法
A.MnO2（木炭粉）加水溶解、过滤、烘干
B.CO(CO2)Ca(OH)2溶液、用浓硫酸干燥
C.CO2(CO)在空气中点燃
D.NaCl(CaCO3)稀盐酸、蒸发
答案

答案：B

单项选择题

A group of frogs were traveling through the forests, but unluckily two of them fell into a hole. The other frogs tried to help them. When they saw how (16) the hole was, they cried to the two frogs that they could not be saved. The two frogs didn’t (17) and tried their best to jump up out of the hole. The other frogs (18) saying that they were sure to die. (19) ,one of the two frogs, who heard what the other frogs were saying, (20) ,then he fell down and died.
The other frog, however, (21) to jump as hard as he could, and at last made it out. When he (22) , the other frogs asked, "Didn’t you hear us" The frog, who had a poor (23) , explained, "I thought you were encouraging me all the time. "
The story teaches us a (24) : There is power(力量) of life and death in the tongue. An (25) word to those who are down can help them out while a discouraging word can kill them.

Ⅱ. 完形填空/Cloze

A．small

B．deep

C．big

D．wide
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单项选择题

法国政治思想家托克维尔在《论美国的民主》一书中说道：“美国的联邦宪法，好像能工巧匠创造的一件只能使发明人成名发财，而落到他人之手就变成一无用处的美丽艺术品。”对此理解正确的是（）

A.美国的民主制度具有很强的可推广性

B.美国的民主制度离不开特定的自然环境、法制和民情

C.美国的联邦宪法是一件好看而不适用的美丽艺术品

D.美国的联邦宪法是美国人排除外部思想的影响而独自发明的
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