题目

某气体的密度比空气小,不与氧气反应,难溶于水且不与水反应,则收集该气体的方法是 A.向上排空气法                B.排水集气法 C.向下排空气法或排水集气法    D.排空气法,排水集气法都可以 答案:C用下列词填空,每词只能用一次,必要时注意词形变化. play a role;    work as;    leave school;    make money;    such as;    get married;     grow up Since then he has played in many films ________ The Matrix, Sweet November and Hardball.
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