5÷(1-12-37.5%)
=5÷12.5%,
=40(吨).
答:这堆煤共有40吨.
—How many students are there in the classroom?
— ________. They are all in the lab. [ ]
A. Some
B. None
C. All
D. Neither
画家修拉以《()》和《()》两幅作品创立了新印象派。