下列属于耐热蔬菜的有（）。
A.南瓜
B.丝瓜
C.豇豆
D.菠菜
参考答案：A, B, C
— I have got a headache.
— No wonder. You ______ in front of that computer too long. [ ]
A. work
B. are working
C. have been working
D. worked
具有引血下行作用的药物是（）。
A.吴茱萸
B.红花
C.丹参
D.牛膝
E.川芎
