题目

—Could you give me some        on how to learn English       ? —Sure. Practice makes perfect. A. advice; good                                    B. suggestions; good C. advice; well                                     D. suggestion; well 答案:C  learn 是动词,应当用副词well修饰,可排除A、B两项;suggestion是可数名词,当前面有some修饰时,应当用复数形式,可排除D项。故选C。一枚火箭由地面竖直向上发射,其速度和时间的关系图线如图所示,则(  )A.t3时刻火箭距地面最远B.t2-t3的时间内,火箭在向下降落C.t1-t2的时间内,火箭处于失重状态D.0-t3的时间内,火箭始终处于失重状态
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