下列所描述的现象中,属于液化的是( )
A:铁块熔成铁水
B:湿衣服晾干
C:河水结成冰
D:沸水上方出现“白气”
下列词语中,没有错别字的一组是( )
下列各数中,比﹣1小的数为( )
从方框中选出下列各旬的最佳应答语
A.I fell off the bike.
B.No,there weren't.
C.I went there by car.
D.I looked it up on the Internet.
E.Yes,I did.
____ ____ do you celebrate this festival?
如图为丙氨酸分子结构模型,下列关于丙氨酸说法不正确的是( )