题目内容
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 单词的正确形式。
Are we too clean?
In some parts of the world,it seems that 21 (keep) things too clean may cause a health problem. Parents often think that children are always getting dirty. But the 22 (true) is that in countries like the UK,parents clean their homes so carefully 23 children hardly ever come into contact with dirt,and therefore germs (细菌). The result is that one person in ten today 24(suffer) from some kind of allergy (过敏反应) 一three times more than just ten years ago.
Parents who think back to how they used to play as a child will see how much things 25 (change) . Children today spend a lot of time in their rooms. Twenty years ago,our parents thought it was better for kids 26 (play) outside,so we would spend 27 (much) time in the park than at home. We always fell over, 28 we just brushed 29 (our) clean and then kept on playing.
Now research seems to suggest that this is 30 good thing. Early contact with germs helps to protect our bodies against allergies later in life.
专项技能训练(3)
语法填空：
21. keeping/to keep。考查非谓语动词。句子主语部 分要用动词-ing形式或不定式。
22. truth。考查词性转换。设空处作主语,前面有the 修饰，故用true的名词形式truth。
23. that。考查连词。本句中用了 so…that…句式。
24. suffers。考查时态和主谓一致。由本空前的today
可知，设空处指的是当前的情况，要用一般现在 时；因为分句的主语为one person in ten可知，谓语要、第三人称单数。
25. have changed(考查时态。how much引导的宾语 从句指的是父母从小时候到现在所看到的所有变 化，故设空处要用现在完成时。
26. to play。考查非谓语动词。it为形式主语,设空处 要用不定式作分句的真正的主语。
27. more。考查形容词的比较级。由本句中的than可 知，设空处要填more。
28. but。考查连词。设空处句意转折，故填but。
29. ourselves。考查代词。句子主语为we ,故宾语要 用反身代词ourselves。
30. a。考查冠词。good thing表示泛指，前面要加a.
