A:①②
B:①③
C:②④
D:③④
—Very well.
选择恰当的应答语。
A.She b my sister.
B.Nice to meet you,too.
C.Wow! It has a long nose.
D.Ten.
E.OK!
下列有关物质的性质或用途的叙述中,正确的是( )