马尔萨斯的著名作品是()。
A.《国富论》
B.《道德情操论》
C.《经济学原理》
D.《人口原理》
参考答案:D
按顺序排列对话。
a. Are there any tall buildings in your village?
b. I like my village, too.
c. Look! This is my village.
d. No, there aren't. But there are many mountains.
e. Yes, there is.
f. I like your village. The sky is blue. The air is fresh. The water is clean.
g. Is there a river?
正确的顺序:
吸入SO2会使人产生()感觉。
A.窒息
B.咳嗽
C.流泪
D.头晕