应慎用寒凉之剂的体质是（）。
A.阳盛之体
B.阴盛之体
C.阳虚之体
D.阴虚之体
E.气虚之体
参考答案：B, C
金属镀层可以用来作为（）。
A.防护性镀层
B.防护-装饰性镀层
C.功能性镀层
D.以上说法都不对
He bought a book with the _____ 50 dollars and then his money _____.[ ]
A. remaining; ran out of
B. remaining; was used up
C. remained, ran out
D. remained, gave out
