11~18岁的青少年钙的适宜摄入量是______mg/日。
A.400 B.600C.800 D.1000
参考答案:D
Sometimes advertisements make________ possible for companies to sell the customers________ money cannot buy..
A. /; that
B.it; what
C.that; which
D./; whose
归脾汤的组成药物包含()
A.木香
B.阿胶
C.地黄
D.芍药
E.川芎