某地某天的最高气温是8℃,最低气温是-2℃,则该地这一天的温差是( )
A.-10℃
B.-6℃
C.6℃
D.10℃
8-(-2)=8+2=10(℃).
故选D.
Today is Monday, and _____ is Wednesday.
A.yesterday
B.the day before yesterday
C.tomorrow
D.the day after tomorrow
贴近地面低层空气中SO2污染的主要来源是
A.小型取暖锅炉和民用煤炉
B.交通运输工具
C.火力发电厂
D.钢铁厂
E.硫酸厂