40×15×34，
=8×34，
=6；
答：甲数是6．
故答案为：6．
________ good use you've made of your time to study，there's still room for improvement.[ ]
A. Whatever
B. However
C. Though
D. That
下列贸易术语卖方承担责任最大的是：
A．CIP
B．DES
C．DDU
D．DDP
