2026年7月托福机经套卷(第1套) - Listen to an Academic Talk / 2 Q1

原题

录音 1

What aspect of marine snow does the speaker mainly discuss?

AIts effects on the atmosphere and ocean life

BThe way it was discovered

CThe processes that produce it

DHow global warming has affected it

正确答案：A

老师暂未填写解题思路。