Question

【题目】语法填空

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的适当形式。

There are two main ____【1】____ (reason) why the temperature of the air is always ____【2】___ (change). One reason is that the air around you _____【3】____ (move) in from somewhere else. Air usually moves in large bodies _____【4】___ (call) air masses. Some air masses move in from the north. These air masses usually have cold air that causes the temperature ____【5】____ (drop). Air masses also move in from the south. They usually have warmer air that causes the temperature to rise.

Temperature changes during the day or night can be great ____【6】___ small. This depends ___【7】____ (part) on how many clouds are in the sky. _____【8】____ there are many clouds during the night, they act like covers on your bed. They blanket the earth and keep the air from ____【9】___ (lose) much of its heat. The temperature usually does not drop much during such a night. When there are many clouds during ___【10】___ day, some of the sun’s energy will not reach the earth. The temperature usually does not rise much on such a day.

Answer 1

【答案】

【1】reasons

【2】changing

【3】moves

【4】called

【5】to drop

【6】or

【7】partly

【8】When

【9】losing

【10】the

【解析】

【1】reasons 考查名词复数。句意：空气温度总是在变化的原因主要有两个。根据前面的数词two可知，用名词的复数形式reasons。

【2】changing 考查动词时态。主语temperature和change之间是主动关系，又根据is，故用现在进行时。

【3】moves 考查主谓一致。句意：一个原因就是你周围的空气在流动。由the air是主语且通篇为一般现在时可知，谓语动词用moves。

【4】called 考查分词作后置定语。call与前的large bodies是被动关系，故用过去分词。

【5】to drop 考查非谓语动词。cause表示“使”、“迫使”，通常接不定式的复合结构作宾语。冷空气使得空气温度下降。

【6】or 考查连词。句意：白天或晚上的温度变化可能很大也可能很小。great和small意思相反，用or表选择关系。

【7】partly 考查副词。句意：这一部分取决于天空中有多少云。修饰动词要用副词。

【8】When 考查连词。根据后文When there are many clouds ...的提示，可知此处用When最合适。

【9】losing 考查固定短语。keep sth. from doing阻止做某事。

【10】the 考查定冠词。the day指白天，与前文的the night相对应。