不定项选择北宋92名宰相中科举出身者达83人，占总数的90%；在176名副宰相中，科举出身者达162人，占总数的92%。
单项选择题Fill in the blanks with the following expressions. We are offering 10 000 metric tons of first grade rice for ________ shipment.A.on the basis ofB.without any delayC.subject toD.promptE.under separate cover
