11.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

12.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

13.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

14.We usually accept payment by irrevocable L/C payable ______shipping documents.

A. among

B. between

C. against

D. about

15.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