在比赛中如发球之次序发生错误时如何解决()
A、发觉后立即改正,错误中双方得分仍有效
B、发觉后立即改正,错误中双方得分无效
C、发觉后可继续比赛,得分亦有效
参考答案:A
We were _____happy to know Shenzhou Ⅳ manned spaceship landed on the earth successfully.[ ]
A. more than
B. other than
C. rather than
D. less than
阻断肾脏β1受体,减少肾素分泌的抗高血压药是
A.硝普钠B.肼屈嗪C.哌唑嗪D.可乐定E.普萘洛尔