题目内容

新鲜蔬菜急米快炒时VitC损失比水煮要少。

A. 对
B. 错

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维生素C为水溶性维生素,可以直接由尿排出,因此不会出现过量而引起中毒的症状。

A. 对
B. 错

所有维生素中,除了VitD 以外,既不能在体内合成,也不能在体内充分储存。

A. 对
B. 错

Mother saved every cent she could spare _______my schooling.

A. to pay for
B. paying for
C. to have paid for
D. paid for

The compositions contained so few errors that the teacher got the students______one another's papers.(1992.TEM-4)

A. correct
B. to correct
C. correcting
D. to be correcting