《国际海运危险货物规则》（IMDGCode）根据危险货物的主要特性和运输要求将危险货物分为（）大类.
A.5
B.7
C.9
D.11
参考答案：C
生物圈的范围包括 （14） 圈的底部，水圈的大部和岩石圈的表面。其中 （15） 圈是一切陆生生物的“立足点”，也是人类的“立足点”。
34. —How do you find the new job?
—It’s hard to find ______ work so that I hardly care what it is ______ I can make a living.
A．satisfied; as long as
B．satisfied; as far as
C．satisfying; as long as
D．satisfying; as far as
