The marine cargo insurance premium rates may vary depending on factors such as （）.

A．type of goods

B．value of the goods

C．mode of transportation

D．the type of risks covered

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参考答案

A, B, C, D

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A．facility

B．goods

C．services

D．information

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2 E-commerce involves exchange among （）.

A．customers

B．vendors

C．business partner

D．corporate infrastructure

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3 The principles of writing business letters are （）.

A．correct grammar

B．no punctuation

C．appropriate layout

D．suitable style

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