时尚招赘婚的民族是()。
A.苗族
B.壮族
C.傣族
D.彝族
参考答案:C
The course normally attracts 20 students per year, ________up to half will be from overseas.
A.in which
B.for whom
C.with which
D.of whom
普萘洛尔的主要作用机制是
A.抑制钠内流
B.抑制钙内流
C.抑制钾内流
D.阻断β受体
E.延长动作电位时间