临时存放爆破器材时,炸药与雷管应分开堆垛,两者间距不小于()。
A.15m
B.25m
C.35m
参考答案:B
It shames me to say it,but I told a lie when _____ at the meeting by my
boss. [ ]
A. questioning
B. having questioned
C. questioned
D. to be questioned
It is said in the book that Thomas Edison (1847-1931) _____ the world leading inventor for sixty years . [ ]
A. would be
B. has been
C. had been
D. was