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It is required that such insulator (绝热体)______a heat resistant material.A、must b
It is required that such insulator (绝热体)______a heat resistant material.A、must b
游客
2025-03-13
29
管理
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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