Customs__________are paid on goods entering the country.
A. duties
B. responsibility
C. fees
D. charges
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度的本义为( )
A. 计算长短的标准 B.尺度 C.渡过
独的特指义是( )
A. 偏偏 B.老而无子的人 C.单独
乘数大小取决于边际消费倾向,边际消费倾向越大乘数越小。()
It is vital that enough money__________to fund the project.
A. be coilected
B. must be collected
C. is collected
D. can be collected.