下列估测正确的是[ ]
A.物理课本的质量约是50kg
B.教室门的高度约是6m
C.一名中学生的身高约是1.65m
D.一名中学生行走的速度约是10m/s
答案:C
I hate going out alone,so I often ask my friend to ________me.
A.defend
B.protect
C.accompany
D.guard
The cargo must be shipped directly to China, that is ( ) is not allowed.
A.partial shipment
B.transshipment
C.through shipment
D.total shipment