题目内容
Something has to be done to stop the rivers from being further polluted, ?
| A．doesn’t it | B．hasn’t it | C．does it | D．has it |
A
解析试题分析：考查反意疑问句。Have/has/had to表示“不得不，必须”时，反意疑问句用don’t/doesn’t/didn’t。不定代词Something作主语，反意疑问句用it。故选A。
考点：考查反意疑问句
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龙人图书快乐假期暑假作业郑州大学出版社系列答案Some researchers believe that there is no doubt______a cure for AIDS will be found.
| A．whether | B．that |
| C．what | D．which |
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| A．is it since | B．will it be before | C．is it when | D．will it be since |
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| A．it | B．that | C．which | D．whom |
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| A．where | B．what | C．which | D．that |
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| B．Given a talk with the student |
| C．One talk with the student |
| D．If you have a talk with the student |
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