题目内容
6．Every year lots of trees to make our country more beautiful．（ ）| A． | is planted | B． | was planted | C． | are planted | D． | were planted |
分析 为使我们的国家更加美丽，每一年都栽许多树．
解答 答案：C；句中的主语"trees"应该是后面的动词plant的动作承受者，二者之间是被动的关系；故用被动语态；根据Every year可知该句为一般现在时态，据此可以判断出本题使用一般现在时的被动语态，结构为be+过去分词，本题的主语为复数，故用are planted，故本题选C．
点评 解答此类题型的要点是掌握时态和语态的正确应用；然后结合语境选择合适答案．
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Knowing and believing seem to be two （25）C things．If smoking is really as harmful as doctors say，it is time for smokers to think about it and try to give it up!
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| 18．A．Moreover | B．Also | C．However | D．Otherwise | |
| 19．A．influencing | B．explaining | C．improving | D．describing | |
| 20．A．parents | B．uncles | C．brothers | D．friends | |
| 21．A．hear | B．catch | C．watch | D．face | |
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| 23．A．what | B．how | C．when | D．why | |
| 24．A．stronger | B．worse | C．longer | D．harder | |
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