One of the requirements for a fire is that the material to its burning temperature.A. is

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解决时间 2021-12-20 23:17

提问者网友：最美的风景
2021-12-20 05:49

One of the requirements for a fire is that the material to its burning temperature.
A. is heated
B. be heated
C. would be heated
D. shall be heated

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五星知识达人网友：猎心人
2021-12-20 06:29

A. is heated(答案→)B. be heatedC. would be heatedD. shall be heated解析：句意：对火的要求之一是材料要被加热到燃点。主语是requirement，suggestion，order，advice等词后面的表语从句中用虚拟语气：should do，should可以省略，而且material和heat是被动关系，用被动语态，选B。

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1楼网友：刀戟声无边
2021-12-20 07:01

好好学习下

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