A.B/S
B.S/B
C.BS
D.0
答案:D
Towards nightfall I found myself out to sea by a strong wind.
A.carrying
B.to carry
C.carry
D.carried
如图,以正方形ABCD的对角线AC为边长做正方形ACEF,以对角线AE为边长做正方形AEGH……那么第五个正方形的面积与ABCD的面积之比为( )。
A.4:1
B.8:1
C.16:1
D.32:1