北豆根来源于下列哪个科()
A.防己科
B.毛茛科
C.罂粟科
D.蓼科
E.豆科
参考答案:A
_____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.
A.A; a
B.The; /
C./; the
D.A; the
集团“1221”战略任务是指什么?