20.Colombo is one of the port cities of______.
A. Sri Lanka
B. India
C. Malaysia
D. Iran

21.The seller should guarantee that the commodities comply_____the quality, specification and performance as stipulated in the contract.
A. for
B. in
C. to
D. With

22.In the foreign trade business,the payment is always made by L/C.In this sentence,L/C is the abbreviation for_________.
A. Bill of Lading
B. Commercial Invoice
C. Buying Contract
D. Letter of Credit

23.The main purpose of the Customs supervision and control is to _______China,s economic,trade,scientific,technological and cultural exchanges with other countries.
A. supervise
B. control
C. promote
D. limit

24.We are sorry to inform you that the shipment is not_______the standard stipulated in the contract.
A. into
B. up to
C. according to
D. instead of

25.We usually accept payment by irrevocable L/C payable______shipping documents.
A. among
B. between
C. against
D. about

26.According to the Customs Law,the duty―paying value of an import item should be its normal_______price which should be approved by the Customs.
A. FOB
B. CIF
C. CFR
D. FCA

27.We______our price according to the international market.
A. adjust
B. readjust
C. accept
D. admit

28.The Customs shall reply in writing within______from the date of receipt of the application for the refund of the duty paid and notify the applicant of its decision.
A. one months
B. two months
C. three month
D. six months