题目

—— Where’s Jack?—— I think he’s still in___bed, but he might just be in___bathroom.A./; /        B.the; the        C.the; /        D./; the 答案:D 解析: be in bed 表示“卧床”,为习惯用语,不与冠词连用;in the bathroom 特指“在(说话双方都知道的)浴室里”。过两点(-1,1)和(3,9)的直线在x轴上的截距为 [  ] A.B.C.D.2
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