【判断题】【消耗次数:1】
Last week he promised that he would come today, but he hasnt arrived yet.
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相关题目
【单选题】 14.He hasnt come yet.What do you consider _______ to him?
①  happens
②  hashappened
③  happening
④  tohappen
【单选题】 It was not until he arrived in class _____ realized he had forgotten his book.
①  when he
②  that he
③  and he
④  he
【单选题】 He was absent today ____________ he was hit by a car.
①  because
②  so
③  or
④  since
【单选题】 He [填空] very busy this week, he [填空] free next week.
①  will be,is
②  is,is
③  will be,will be
④  is,will be
【单选题】 Has he _______ the chair _______ yet?
①  had, mend
②  had, mending
③  got, mended
【单选题】 No sooner ___ he arrived home than he ___ to start on another journey.
①  has; was asked
②  have; were asked
③  had; is asked
④  had; was asked
【单选题】 If he ___ tomorrow, he would find Mr. Wang in the office.
①  comes
②  will come
③  should come
④  come
【判断题】 Ever since he arrived, he has been complaining constantly about the weather.
①  正确
②  错误
【单选题】 9. No sooner _______ he arrived home than he _______to start on another journey.
①  has; was asked
②  have; were asked
③  had; is asked
④  had; was asked
【单选题】 No sooner________he arrived home than he________to start on another journey.
①  has;was asked
②  have;were asked
③  had;is asked
④  had;was asked
随机题目
【判断题】 两个变量中不论假定那个变量为自变量x,那个为因变量y,都只能计算一个相关系数。
①  正确
②  错误
【判断题】 甲产品的产量与单位成本的相关系数是-0.9,乙产品的产量与单位成本的相关系数是0.8,因此乙比甲的相关程度高。
①  正确
②  错误
【判断题】 所有可能的样本平均数的平均数,等于总体平均数。
①  正确
②  错误
【判断题】 由直线回归方程y=-450+2.5x,可知变量x与y之间存在正相关关系。
①  正确
②  错误
【判断题】 相关关系不是专用于反映两现象在直线相关条件下,关系密切程度的数量分析的相对指标,也可用于曲线相关条件下。
①  正确
②  错误
【判断题】 相关关系是指现象之间存在着确定的数量的依存关系。
①  正确
②  错误
【判断题】 抽样误差是不可避免的,但人们可以调整总体方差的大小来控制抽样误差的大小。
①  正确
②  错误
【判断题】 平均数指数是从个体指数出发,对个体指数加权平均以观察个体指数的平均水平。
①  正确
②  错误
【判断题】 应用移动平均法,若原数列的指标数值出现周期性的变化,要以周期的长度作为扩大的时间间隔的长度。
①  正确
②  错误
【判断题】 平均指标反映总体各单位变量值分布的集中趋势,变异指标则反映其离散趋势。
①  正确
②  错误