判断机体肥胖最常用、最简便的指标是______
A.理想体重 B.体质指数 C.皮褶厚度 D.体脂含量
参考答案:B
It is a good way to ______ foreigners in English. [ ]
A. communicate with
B. communicate to
C. tell with
D. say .
具有挥发性的是( )
A.小檗碱B.麻黄碱C.甜菜碱D.槟榔碱E.咖啡因