A-A+
(The atmosphere) (is consisted) of certain gas
问题详情
(The atmosphere) (is consisted) of certain gases (mixed together) (in) definite proportions.
A．The atmosphere
B．is consisted
C．mixed together
D．in
参考答案
正确答案：B
解析：consist of sth.由什么构成，consist是不及物动词，不用被动。
