原题
录音 1
According to the speaker, what is one benefit that kelp forests provide?
AThey expand shorelines by trapping sediment and building new land.
BThey provide habitat for a great diversity of marine life.
CThey clean seawater to make it drinkable or suitable for agriculture.
DThey help control the population of sea urchins and other pests.
正确答案：B
解题思路
老师暂未填写解题思路。