锁骨骨折向下向内移位不可能出现的是（）。 A.刺伤锁骨下动静脉 B.刺破胸膜或肺尖

--- He was nearly drowned once.

--- When was _____?

--- _____was in 1998 when he was in middle school.

A．that; It

B．this; This

C．this; It

D．that; This

.While the Internet is creating a global village and bringing people together, we are _____ producing a society where people spend their lives in front of a screen, and become unable to communicate face—to-face.

A．in the process

B．in progress

C．in danger of

D．in my opinion

血氨升高导致肝性脑病发生的机制，是干扰了大脑的（）

A.蛋白质代谢

B.脂肪代谢

C.微量元素代谢

D.水盐代谢

E.能量代谢

中国南海自1月21日至9月30日为（）。

A.热带区带

B.夏季区带

C.冬季区域

D.亚热带区域

在Excel工作表中B6单元的内容为公式“=A5*$C$2”，若用命令将B6单元的内容复制到D8单元格中，则D8单元格的公式为( )。

A．“=A5*$E$4” B．“=A5*$C$2” C．“=C7*$C$2” D．“=C5*$C$2”