According to a recent study, hand sanitizers require a 60 percent minimum alcohol concentration for...

题目信息

According to a recent study, hand sanitizers require a 60 percent minimum alcohol concentration for the killing of most harmful bacteria and viruses.

A:require a 60 percent minimum alcohol concentration for the killing of

B:require that there be a 60 percent minimum alcohol concentration to kill

C:require that a 60 percent minimum alcohol concentration be present to kill

D:require a 60 percent minimum alcohol concentration to kill

E:require that there be a 60 percent minimum alcohol concentration for the killing of

参考答案及共享解析

共享解析来源为网络权威资源、GMAT高分考生等；如有疑问，欢迎在评论区提问与讨论

正确答案： D:require a 60 percent minimum alcohol concentration to kill

做 SC 的方法是找 Split 这道题ABCDE 的开头部分都一样，都是【require】，不好排除。但是结尾不一样。AE 是【 for the killing of】，BCD 是【to kill】。表目的，不定式【to kill 】要比复杂动名词【the killing of】更简洁。所以 AE 排除。再观察 BCD，找 Split。显然，BC 是一组，他们都用了从句【require that】的表达形式。D 用的是【require sth. to do】的形式。假设现在不知道 BC 和 D哪一种表达是对的。不妨先分析 BC。B 的错误比较明显，【require THAT somebody DO】是固定用法，出现【there be】就错了。所以只剩下CD。

回忆 Require 的用法，其实【sb./sth. require sth. to do】或者【require THAT somebody do】都可以。但是这里的主句是【洗手液需要至少60%浓度的酒精才能杀灭细菌】。主语是【洗手液】，不是 somebody（人）。所以【require THAT somebody do】的用法不妥。不能要求【洗手液】去做【达到60%浓度酒精】这件事。C 排除。最后看 D，【sb./sth. require sth. to do】表达出了洗手液需要一定浓度的酒精才能杀菌的含义。同时不定式【to kill 】表目的准确简洁。因此选D

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