问题
选择题
One of the requirements for a fire is that the material ____ to its burning temperature.[ ]
A. is heated
B. will be heated
C. be heated
D. would be heated
答案
答案：C
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One of the requirements for a fire is that the material ____ to its burning temperature.[ ]
A. is heated
B. will be heated
C. be heated
D. would be heated
答案：C