具有开窍、辟秽、止痛之功,用治冠心病心绞痛的首选药物是()。
A.石菖蒲
B.冰片
C.苏合香
D.丹参
E.红花
参考答案:C
The landscape photographer is _______ the lighting conditions that are present at the time of
the shoot.
A.at the expense of
B.at the risk of
C.in the way of
D.at the mercy of
哪一届亚运会首次对参赛运动员举行兴奋剂检测()
A.第5届
B.第6届
C.第7届