下列哪种心律失常最严重:()
A.室性心动过速
B.房性早搏
C.室上性心动过速
D.室性早搏
E.心房颤动
参考答案:A
—What do you think of Zhang Qiang?
— does he study hard in school, does he keep the school rules.
A.Not only; but also
B.Neither; nor
C.Either; or
D.Hardly; when
提高心理健康水平的最有效的方法,就是()。