【名词&注释】
正确答案:A。A.1：4 B.1：5 C.2：3 D.2：5 更多高中的考试资料下载及答案解析请访问不凡考网学历类考试考试频道。
[单选题]物质的量之比为2：5的锌与稀硝酸反应，若硝酸被还原的产物为N2O，反应结束后锌没有剩余，则该反应中被还原的硝酸与未被还原的硝酸的物质的量之比是
A. 1：4
B. 1：5
C. 2：3
D. 2：5
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举一反三：
[单选题]第二节（共5小题，每小题2分，满分10分）根据短文内容，从下框的A~F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项。
A. A Gift giving proven to be valuable.
B. Memories from gift giving
C. Moments and events for gift giving
D. Various functions of gift giving
E. Gitt giving as a wasteful practice
F. F.Gift giving as a two-way social activity
G. Gift Giving
H. 61.
I. There are many occasions（场合） for giving gifts in modern industrialinzed societies;birthdays,naming ceremonies, weddings, anniversaries, New Year, It is common to give gifts on many of these celebrations in western cultures. In addition, special events, such as one’ s first day of school or graduation from university, often require gift fiving.
[单选题]花被在花芽中的排列方式为各片边缘相接，但不相互覆盖，此为( )排列，如葡萄科。
A. 镊合状
B. 旋转状
C. 覆瓦状
D. 重覆瓦状
[单选题]
A. each one
B. each other
C. the other
D. one other
[单选题]Swimming is my favorite sport, There is_____ like swimming as a means of keeping fit.
A. something
B. anything
C. nothing
D. everything
[单选题]听第7段材料，回答第8、9题。
8 Where has Barbara been?
A. Milan
B. Florence
C. Rome
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