来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/12 03:19:36
一道英语题?请给出正确解释,谢谢!
It is required that such insulator(绝热体）_____ a reat resistant material.
A: must be made of B: should be made of
C: will be made of D: would be made of
B 前是要求require ,后面应该用should 用中文也想得通.
大师作文网