相对分子质量为84,通过加氢反应可在分子中引入两个-CH2-原子团的不饱和烃有( )
A.2种
B.3种
C.4种
D.5种
答案:B
_______ young girl reminded me of my youth gone. I’m now ______ has-been that can tell what to do or not to do.
A.The;a
B.A; the
C.A; a
D.The;不填
宋任穷故居位于浏阳市哪个乡镇?