【单选题】【消耗次数:1】
It [填空] raining when they left home.
is
are
was
were
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相关题目
【单选题】 A: Were you at home last night? B: [填空].
①  Certainly
②  Certainly I was
③  Sure I was
④  O.K
【单选题】 Please get me a new [填空] when you go back home.
①  clothes
②  dress
③  clothing
④  trousers
【单选题】 It is ten years ___ I left home.
①  when
②  after
③  since
④  as
【多选题】 We were very tired and wanted to get home ____________________ .
①  as soon as possible
②  as quickly as possible
③  as fast as possible
④  as much as possible
【单选题】 Who _______ your pets when you are not at home?
①  takes care
②  looks care
③  takes care of
【单选题】 The garden ____ while the Greens were away from home.
①  took good care of
②  was taken good care
③  was taken good care of
④  was taking good care
【单选题】 The garden _______while the Greens were away from home.
①  took good care of
②  was taken good care
③  was taken good care of
④  was taking good care
【单选题】 He left home without ______ any message to his parents.
①  leaving
②  leave
【单选题】 There were some chairs left over[] everyone had sat down.
①  when
②  until
③  that
④  where
【单选题】 When I was a child, I_______go back home on time.
①  have to
②  must
③  had to
随机题目
【单选题】 具有急回特性()的曲柄摇杆机构行程速比系数。
①  K=1
②  K1
③  K1
④  以上都不对
【单选题】 平面运动副所提供的约束为()
①  1
②  1或2
③  节线2
④  3
【判断题】 机器的传动部分是完成机器预定的动作,通常处于整个传动的终端。
①  正确
②  错误
【单选题】 下列哪一点是构件概念的正确表述()
①  构件是机器零件组合而成的
②  构件是机器的装配单元
③  构件是机器的制造单元
④  构件是机器的运动单元
【判断题】 减速器中的轴、齿轮、箱体都是通用零件。
①  正确
②  错误
【判断题】 整体式连杆是最小的制造单元,所以它是零件而不是构件。
①  正确
②  错误
【单选题】 下列不属于机器的工作部分的是
①  数控机床的刀架
②  工业机器人的手臂
③  汽车的轮子
④  空气压缩机
【判断题】 零件是组成机械的最小运动单元。
①  正确
②  错误
【判断题】 一部机器可以只含有一个机构,也可以由数个机构组成。
①  正确
②  错误
【单选题】 ()是构成机械的最小单元,也是制造机械的最小单元。
①  机器
②  零件
③  构件
④  部件