答案:D
—Your math is very good.
—__________.[ ]
A. That's right
B. Thank you
C. No, not at all
D. Of course
我国土地利用面临的现状是人均耕地少、优质耕地少、后备耕地资源少,2005年全国人均耕地1.4亩,不到世界平均水平的( )。
A.30%
B.40%
C.45%
D.60%