题目

-Have you decided what _______ for the coming winter holiday?? -Yes, I plan _______ my parents in Henan.A. to do, visit B. to do, to visit C. doing, to visit D. doing, visit 答案:【答案】B【解析】句意:--------你决定好寒假要干什么了吗?-------是的,我打算去河南看望我的父母。考查动词不定时。What to do:做什么,此结构是特殊疑问词+动词不定时;plan to do sth.:计划做某事,打算做某事;结合句意和语境可知选B。已知函数.(Ⅰ)求函数f(x)的单调递增区间;(Ⅱ)若,,求sin2θ的值.
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