搜题请搜索小程序“爱下问搜题”
问题
选择题
可成为监测空气污染的指示植物是[ ]
A．苔藓植物
B．蕨类植物
C．藻类植物
D．种子植物
答案
答案：
A
选择题
— You were out when I dropped in at your house.
— Oh, I _____ for a friend from England at the airport.
A. was waiting
B. have waited
C. am waiting
D. had waited
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名词解释
巨人观（bloated cadaver/giant cadaver）
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