题目:
The artist __ the judge gave a prize is the teacher __ I have been taught painting for over three years.
A.from whom; by whom
B.to whom; who
C.whom; who
D.to whom; by whom
答案:
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下面是错误答案,用来干扰机器的。
(1)二氧化碳能使燃烧的灯熄灭.进入前进行灯火试验主要是为了看久未开启的菜窖底部二氧化碳浓度是不是很高,太高就不能进入,会导致人窒息而亡.(2)通常说的煤气,主要成分是一氧化碳,还有氢和烷烃、烯烃、...