形成光化学烟雾的污染物是()
A.SO2、烟尘
B.O2、NOx
C.NOx、碳氢化合物
D.CO、O3、NOx
E.CO、O3、NO
参考答案:C
I found I could easily make myself _________ by using sign language.
A.understood
B.understand
C.to understand
D.being understood
《欧也妮,葛朗台》中《家庭的苦难》一章,作者设置了哪些情节来表现葛朗台守财奴的本性?