—They are my CDs.
A:What's that
B:What are those
C:Where's that
D:Where are those
如图是肌肉的协作关系示意图.当我们做屈肘动作时( )
毕业晚会上,小刚同学准备献唱《朋友,别哭》,可当音乐响起时,他却紧张的忘了词、如果你是主持人,会说什么为他解围?你说:____。
下列现象,是由大气的散射作用造成的是( )