题目

“Is John coming by train?” “He should, but he _________ not. He likes driving his car.” A. must                        B. can                        C. need                        D. may 答案:D 解析:  may 表推测,may not 意为“可能不(会坐火车来)”。句中的 He should 为 He should come by train 之省略,由于其后出现转折连 词 but,说明语意有变化,再结合下文的 He likes driving his car,便可决定此题选D。注意,不能选B,因为can表示推测时通常不用肯定陈述句。某饭店门前的一串彩灯上串联着17只小灯泡,在电源插头处的电流为0.17A,通过每只灯泡的电流为______mA.
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