The city of London lies__the River Thames and__the center of it stands a tall tower.
问题描述：
The city of London lies__the River Thames and__the center of it stands a tall tower.
A.in;in B.on;in C.on;on D.by;at
答
D.by the river=在河边at the centre=在中心,有时也有in the centre of但偏指直观的事物,at the centre偏指抽象的.p.s.选A的那位,100%=100 percenT.百分比不能用复数1%= one percent2%= two percent100%= a hundred ...