下列地理现象中,可用“沧海桑田”来描述的是
A:山体滑坡
B:泥石流
C:青藏高原上发现海洋生物化石
D:沙尘暴
判断正误。
I like Chinese music. I don't like pop music. Because I think pop music is not quiet. I can play the zither. My sister can play the zither, too . But she's better than me. We can play the erhu. I am better than my sister.
伊拉克与伊朗的战争原因主要是( )
小涛是贫血患者,小涛最好使用( )