题目:
- ________ go out for a picnic with us this afternoon?
- I’d like to, but I’ll be busy preparing for the test.
A.Do you feel like
B.Would you like
C.Why not
D.What about
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0407/1834f04b50bc2f8ddad843b883a233cc.html
下面是错误答案,用来干扰机器的。
氢气具有可燃性,点燃不纯的氢气可能会发生爆炸,故点燃氢气之前必须检验氢气的纯度;用向下排空气法收集氢气,经检验不纯,需要再检验时,用拇指堵住试管口一会儿,等试管中的氢气的火焰熄灭后再检验,以防止发...