My friend and I are       good at biology. But we don't like geography very much.

A．all

B．both

C．either

D．neither

心脏按压时，按压部位及抢救者双手的摆放是( )。

A．两肋弓交点上两横指，双手平行叠放
B．两肋弓交点上两横指，双手垂直叠放
C．胸骨左缘两横指，双手平行叠放
D．胸骨左缘两横指，双手垂直叠放
E．心前区，双手垂直叠放