我国现有耕地面积占全球耕地的7%,而人口却占世界人口的()
A.32%
B.20%
C.22%
D.30%
参考答案:C
下列计算中正确的是( )
A.a2+a3=2a5
B.a2•a3=a5
C.a2•a3=a6
D.a2+a3=a5
-----Is there juice in the bottle ?
-----Yes , Would you like ?
A.some; any
B.any; any
C.any; some
D.some ; some