下列哪个腧穴主治元阳暴脱，肠鸣腹痛，泄泻等病证（）。
A.天枢
B.神阙
C.阴交
D.下脘
E.百会
参考答案：B
He told me a piece of news, _____ terrible.[ ]
A. I think it is
B. I think which is
C. which I think it is
D. which I think is
质谱中质荷比最大的峰不一定是分子离子峰。( )
