They are twins. They look _____.[ ]
A.same
B.like
C.after
D.the same
答案:D
[A]train[B]post office[C]coat[D]hotel[E]theatre[F]blackboard[G]umbrella
You travel in it.
火力发电厂排出的烟气会造成大气的污染,其主要污染物是()
A、二氧化硫
B、粉尘
C、氢氧化物
D、微量重金属