A)用所给词的适当形式填空。
9．I have a ___________．
可能用到的相对原子质量：H—1，C—12，N—14，O—16，Na—23，Mg—24，Al—27，S—32，Cl—35.5，Ca—40，Fe—56，Zn—65，Ag—108
13． Either of them can take this job，but I wonder who does everything _________ ．
5．_________ a teacher is great!
10． —What’s the time
（2）云归而岩穴暝 归：_________________________
简要概括：文段主要记叙了一件什么事情(3分)
—How heavily it rained this early morning.
摩擦与我们息息相关. 老师在黑板上写字是利用粉笔与黑板间的 摩擦.
具体说说第④段在文章结构上的作用。（3分）
下面加点词的解释，完全正确的一项是（ ）
《朝花夕拾》是鲁迅的一部散文集，请根据你的阅读经验，回答23-24题。
London-is such a wonderful city．It is very large．The Thames River runs (11) the city from west to east． So the city has (12) parts: the South and the North． In the North， there are important buildings， shops， big parks and interesting places． the weather in London is good． In winter it is not very cold and in summer it is not very hot (13) the city is near the sea． People say (14 ) London is a foggy city and it often rains． It is true．Last year，when l (15) in London， Imet one of the (16) fogs in years． You could hardly see your hands in front of your face． Cars and buses moved -along with their lights on．When evening fell， the weather (17 ) even worse． The fog was as thick as milk．(18) the buses and cars stopped． I happened (19 ) ． an important meeting on the other side of the town， but it was impossible to find a car． I had to get there (20) ．
日常生活中除去油污的方法很多，下列现象不属于乳化的是