原题
录音 1
What point does the speaker make about plants in aquariums?
AThey should be the same plants as those found in streams in India.
BThey should be orange-red to match male scarlet badis.
CThey help keep male scarlet badis separate from one another.
DThey are the primary food source for the scarlet badis.
正确答案：C
解题思路
老师暂未填写解题思路。