呈条形、类圆形或扁块状,表面黑色、灰黑色或棕黑色,体轻,质硬的药材是()
A.灵芝
B.猪苓
C.海藻
D.茯苓
E.冬虫夏草
参考答案:B
—Is the girl _________ is interviewing our school headmaster your friend?
—Yes, she is from CCTV.
[ ]
A. whom
B. who
C. which
D. 不填
低高潮是指()。
A.一天中两次高潮较低者
B.一天中两次低潮较高者
C.一月中最高的低潮
D.一月中最低的高潮