If you intend to melt the snow for drinking water, you can_____extra purity by r

游客2024-09-06  8

问题 If you intend to melt the snow for drinking water, you can_____extra purity by running it through a coffee filter. (2017-22)

选项 A、assure
B、insure
C、reassure
D、ensure

答案 D

解析 ensure表示“确保,保证”,通常用于以下句型:ensure sth.,ensure sb.sth.,ensure+(that)从句,此句指确保某事,侧重使人相信某个行为或力量产生的结果。assure尤指“(为消除忧虑)确定地对……说,向……保证”,侧重消除某人思想上的怀疑或担心,常用用法为assure sb.of sth.,assure sb+(that)从句;insure意为“(为……)投保”,通常和介词against搭配;reassure指“安慰焦虑不安的人使其打消疑虑”,常用结构为reassure sb.about sth.或reassure sb.+(that)从句。
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