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外语
If you intend to melt the snow for drinking water, you can _____ extra purity by running it through a coffee filter.
If you intend to melt the snow for drinking water, you can _____ extra purity by running it through a coffee filter.
admin
2017-06-16
49
问题
If you intend to melt the snow for drinking water, you can _____ extra purity by running it through a coffee filter.
选项
A、assure
B、insure
C、reassure
D、ensure
答案
D
解析
空格处意为“您可以用咖啡过滤器过滤融水以——额外纯度。”D项ensure意为“确保”,且后面可以带名词作宾语,代入句意通顺,符合要求,故选D。A项assure意为“使确信,使放心,向……保证”,常用于assure sb.of sth.或assure sb.that结构,如:His doctor has assured us that he’ll be fine.(他的医生已向我们保证他会没事的。)可从用法上排除。C项reassure“使……放心”后也接“人”作宾语,如Teachersreassured anxious parents.(老师焦急的家长放心。)B项insure“给……保险;确保”,表示“给……保险”时,代入空格,句意不通;insure表示“确保”时,是ensure的美式拼法,但选项中有ensure时,优先选ensure。
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专业英语四级
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