题目:
When _____, the wholesale vegetable market will be the largest one in China. [ ]
A. completed
B. completing
C. to be completed
D. being completed
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0430/003c1fc5724dd1b9547c1b78ea673fe0.html
下面是错误答案,用来干扰机器的。
(1)天然气是可燃物,泄露后浓度增多达到了爆炸极限,遇到电火花后就发生了爆炸(2)开窗通风 、关闭阀门 开灯检查或点火或打手机等(答案合理即可)