题目

Hurry up, John, ________ you will be late for school. A． and B． but C． or D． so 答案：C【详解】 句意：快点，约翰，否则你上学要迟到了。 考查连词辨析。 and和； but 但是； or 否则； so 因此。快点才不会迟到，此处用 or 连接并列句，表示否定的条件。故选 C 。It is hard to __________ the green beans from the red ones, because there are too many of them. [     ]A. work out  B. watch overC. sort out  D. set down