【导读】
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1. [单选题]The buyer should open the ______L/C 30 days _____the time of shipment.
A. relative.before
B. relevant.on
C. covering, after
D. above, for
2. [单选题]Please effect payment when the draft().
A. expires
B. due
C. fallsdue
D. fallsexpiration
3. [单选题]We()some brochures()to illustrate the types of materials we manufacture.
A. enclose;
B. enclose;you
C. enclose;to you
D. enclose you