Don't worry. We still have _____ time.[ ]
A. few
B. a few
C. little
D. a little
答案:D
已知⊙O1的直径为6cm,⊙O2的直径为8cm,两圆的圆心距O1O2 为1cm,则这两圆的位置关系是
A.内切
B.外切
C.相交
D.内含
“运输方式”栏应填:
A.2
B.4
C.3
D.5