题目

All the junior high school students should try their best to study hard, __________they can't get a chance to study in a senior high school.A.so B.but C.or D.and 答案：【答案】C【解析】句意：所有的初中生都应该努力学习，否则他们就没有机会上高中。考查连词辨析。so因此，表因果；but但是，表转折；or或者、表选择或意为否则，要不然；and和，表顺承；根据上文“All the junior high school students should try their best to study hard” 和空格后“they can't get a chance to study in a sen下列式子中，_____是等式，_____是方程．A、15X+5＝50 B、10+M C、7.5﹣3.4＝4.1 D、4X+13X≥5.1．