急性HCN中毒的特点应除外（）A.呼出气中有苦杏仁味 B.机体严重缺氧，皮肤粘膜暗红

设z是方程x+y-z=e^z所确定的x与y的函数，则dz=（）。

贵州野生植物种类繁多，下列属国家一级保护的植物有：（）。

A、珙桐

B、贵州苏铁

C、银杉

D、马尾松

根据句意及首字母提示完成句子

1. Tom was e ______ because he had stayed up all night working.

2. My parents are both f______ . They make a living by growing vegetables.

3. —My basket is lighter than yours.

    —Sure it is. My basket is full, but yours is e______.

4. Ye Li and Yao Ming got m ______ on August 7th, 2007.

5. Can you d ______ the beauty of the mountain village ?

______ into oceans and rivers is a serious form of pollution.

A．Pouring sewage

B．Emptying litter

C．Throwing garbage

D．Dumping sewage

患者，男，49岁。诊断急性下壁心梗。突然抽搐，意识丧失，颜面发绀，呼吸缓慢，脉搏触不清，心音消失。心电图监测示：室颤。

抢救首先开始的步骤是（）

A.大声呼唤其名字

B.针刺人中

C.立即抬入手术室行开胸心脏按压

D.心腔内注射三联针

E.心前区叩击后心脏按压