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问题
填空题
人体每天脂肪供应量一般以不超过总热量的_______为宜,低脂膳食每天脂肪限于g以下。
答案
参考答案:30%|40
选择题
— What's wrong with your coat?
— Just now when I wanted to get off the bus, the man next to me ____ on it.
A. sat
B. had sat
C. had been sitting
D. was sitting
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填空题
铁矿石中有害杂质含量S(),Pb(),Zn()。
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