【简答题】This cage is too small, and the animals have nothing to do all day but __________ inside round and round. [A] to run [B] running [C] runs [D] run
【单选题】—What’s wrong? —Nothing serious.I’m just ________ busy.
【单选题】关于物体的重力,下列说法中正确的是( )
C.
物体的重心是物体所受重力的作用点,所以重心一定在物体上
【简答题】根据所听到的内容作答_____。 A)It's too wonderful to be true. B)It,s too expen8ive for her. C)She considers it nothing fancy. D)She is considering buying one.
【单选题】— This dress is too expensive. — You can look at that one. That one is much _____. [ ]
【简答题】有四种萃取剂,对溶质A和稀释剂B表现出下列特征,则最合适的萃取剂应选择( )A. 同时大量溶解A和B B. 对A和B的溶解都很小 C. 大量溶解A少量溶解B D. 大量溶解B少量溶解A
【判断题】物体受到的重力的施力物体是物体本身。( )
【单选题】060308 关于物体的重力,下列说法中正确的是( )
C.
物体的重心是物体所受重力的作用点,所以重心一定在物体上