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It is required that such insulator (绝热体) ______ a heat resistant material.
It is required that such insulator (绝热体) ______ a heat resistant material.
admin
2008-11-13
32
问题
It is required that such insulator (绝热体) ______ a heat resistant material.
选项
A、must be made of
B、should be made of
C、will be made of
D、would be made of
答案
B
解析
在“it is required that…”句型中that从句中要用虚拟语气,其表示方法是should do。类似的还有“it is desired that…”,“it is suggested that…”,“it is ordered that…”等。
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成人本科学位英语
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