Question

【题目】语法填空

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

There are two main reasons 【1】 the temperature of the air is always 【2】 (change). One reason is 【3】 the air around you moves 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 partly 【7】 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】why

【2】changing

【3】That

【4】called

【5】to drop

【6】or

【7】on

【8】When

【9】losing

【10】the

【解析】

【1】why；考查why引导的定语从句。句意：空气温度总是在变化的原因主要有两个。根据reasons可知关系副词应为why。

【2】changing；主语temperature和change是主动关系，又根据is，故用现在进行。

【3】that；考查that引导的表语从句。句意：一个原因就是你周围的空气在流动。

【4】called；考查分词作后置定语。

【5】to drop；考察固定短语，cause sb to do使…怎么样。冷空气使得空气温度下降。

【6】or；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、或许。

【7】on；考查固定短语,depend on取决于…。这一部分取决于天空中有多少云。

【8】When；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。