在对服装流行趋势的分析中，最重要的是对（）的了解和分析，只有这样才能把握住流行。
A.环境
B.人
C.造型
D.地域
参考答案：B
He studied hard at school when he was young, ___________leads to his success in his later life.
A．what
B．which
C．that
D．so that
醋氢可待因、尼可待因、尼二氢可
