—Your T-shirt is nice. It must be expensive.
—Not at all. I only spend $10 it.
A:in
B:on
C:for
D:of
用小数表示:2×10﹣3=____.24×(﹣2)4×(﹣0.25)4=____.
图示为某地地质剖面图,图中①为沉积物,②~⑧为岩石。读图,回答下列问题。
4.08×7.5=
10.8÷0.45=
7.9÷0.35≈ (得数保留两位小数)