A-A+
What does this passage mainly talk about？A．The
问题详情
What does this passage mainly talk about？
A．The greenhouse effect.
B．The burning of fossil fuels.
C．The potential effect of air pollution.
D．The likelihood of a new ice age.
参考答案
正确答案：C
解析：主旨判断题。综合全文内容，进行归纳推理。本文阐述了科学家有关污染的两种观点，无论是“温室效应”，还是“新冰河时代”均是污染造成的潜在后果，故选C。
