advancing society
选B。however用来修饰rich,however在这里=no matter how.for表示显而易见的原因,because主要用于回答,语气较强B.
however rich knowledge...however用来形容rich
because一般不用于句中,用for 比较合适选择A呀
however是然而,不能连词呀,只能做副词A
however rich knowledge...however用来形容rich
because一般不用于句中,用for 比较合适选择A呀
however是然而,不能连词呀,只能做副词A