皮肤接触应立即脱去污染的衣服，用（）的硼酸液或大量清水彻底冲洗，严重者就医。
A.2%
B.5%
C.8%
D.10%
参考答案：A
单词拼写。
1、Can you ____________(发音) the word correctly?
2、He is one of the ____________(士兵) who took part in the first world war.
3、The books on those _____________(架子) are bought for the children in poor area.
4、Mr. Smith ____________(教) us math last year.
5、I come here ____________(特意地) to see you. I haven't seen you for months.
正常P波肯定倒置的导联是（）
A.Ⅰ
B.Ⅱ
C.Ⅲ
D.aVF
E.aVR
