A:strong
B:dangerous
C:beautiful
D:cold
从方框中选出下列各旬的最佳应答语。
A.It was good.Thank you.
B.Yes.I could see many stars.
C.I rode a bike yesterday.
D.We went there by plane.
E.I'm 34 kg.
20世纪20年代德国与法国的疆界发生了明显变化,其直接依据是( )