【单选题】【消耗次数:1】
We started out early in order that we ____ there in time.
would get
ought get
should get
had to
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相关题目
【单选题】 There are ________ people in front of the cinema gate so we have to wait ________ time to get into the cinema.
①  too much; much too
②  too many; too much
③  much too; too much
④  too much; too many
【单选题】 As a freshman, we should get to know campus ( ) as soon as possible and make good use of them.
①  Source
②  sources
③  resource
④  resources
【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】 We often get ____ when people cut in line.
①  annoying
②  annoyed
③  to annoy
④  annoy
【单选题】 We often get ____ when people cut in line.
①  annoying
②  annoyed
③  to annoy
④  annoy
【判断题】 we from Beijing to Guangzhou will get jet lag.
①  正确
②  错误
【单选题】 We often get _______ when people cut in line.
①  annoying
②  annoyed
③  to annoy
④  annoy
【判断题】 Youll have to get off here.??This is enough far for we go.
①  正确
②  错误
【单选题】 A: I need to buy a wedding gift for Jane. B: Should we stop at the shopping center? A: [填空]. The weddings not until next week, but I wont have time later to get them anything.
①  Wont be necessary
②  Its your call
③  I suppose so
④  If you insist
【单选题】 By the time you get there, the guests will [填空].
①  have left
②  leave
③  left
④  be leaving
随机题目
【单选题】 已知E(X)=1,E(Y)=2,E(XY)=3,则X,Y的协方差Cov(X,Y)=( )
①  2
②  1
③  0
④  3
【单选题】 设随机变量<img class=jc-formula data-tex=X_{ i }\sim \left( -1\quad \quad \quad 0\quad \quad 1\\ \frac { 1 }{ 4 } \quad \frac { 1 }{ 2 } \quad \frac { 1 }{ 4 } \right) (i=1,2) src=https://huaweicloudobs.ahjxjy.cn/D507955A388085D7F597D003F1F5E539.png style=vertical-align: middle;/>且满足<img class=jc-formula data-tex=P(X_{1}X_{2}=0)=1 src=https://huaweicloudobs.ahjxjy.cn/14A2767F554AB0088FBD6A8217107D33.png style=vertical-align: middle;/>,则<img class=jc-formula data-tex=P(X_{1}=X_{2})= src=https://huaweicloudobs.ahjxjy.cn/823B72B05F6C641DB58892CFEE30732D.png style=vertical-align: middle;/>
①  0
②  1/4
③  1/2
④  1
【单选题】 两个相互独立的随机变量X和Y分别服从正态分布N(0,1)和N(1,1),则
①  <img class=jc-formula data-tex=P(X+Y\le 0)=\frac { 1 }{ 2 } src=https://huaweicloudobs.ahjxjy.cn/2D796C16E4ADCDC598AFA0E462095A7C.png style=vertical-align: middle;/>
②  <img class=jc-formula data-tex=P(X+Y\le1)=\frac { 1 }{ 2 } src=https://huaweicloudobs.ahjxjy.cn/7CB2C1C70ED2C80A1B88E527EB9CA463.png style=vertical-align: middle;/>
③  <img class=jc-formula data-tex=P(X-Y\le 0)=\frac { 1 }{ 2 } src=https://huaweicloudobs.ahjxjy.cn/FB3B9FB1D8E1D2482BA90188CE469A84.png style=vertical-align: middle;/>
④  <img class=jc-formula data-tex=P(X-Y\le 1)=\frac { 1 }{ 2 } src=https://huaweicloudobs.ahjxjy.cn/03DC9D32FBCAC18FA548285A7F9DF6CC.png style=vertical-align: middle;/>
【判断题】 将一枚均匀骰子连掷两次,则两次点数中最大点数不超过3的概率为1/4.
①  正确
②  错误
【判断题】 将一枚均匀骰子连掷两次,则两次点数之和为8的概率为5/36.
①  正确
②  错误
【判断题】 袋中有白球4个,黑球2个,连取两球,取出不放回,如果已知第一个是白球,则第二个球是白球的概率为3/5。
①  正确
②  错误
【判断题】 有甲乙两批种子,发芽率分别为0.8和0.7,在两批种子中各任意选取一粒,则至少有一粒种子发芽的概率为0.06.
①  正确
②  错误
【判断题】 将一枚均匀骰子连掷两次,则两次点数之和为8的概率为1/36.
①  正确
②  错误
【判断题】 教室中有r个学生,则他们的生日(一年以365天计)都不相同的概率是<img class=jc-formula data-tex=\frac { { A }_{ 365 }^{ r } }{ { 365 }^{ r } } src=https://huaweicloudobs.ahjxjy.cn/6C838E81EA84324651C979BC1EE9DCF5.png style=vertical-align: middle;/>
①  正确
②  错误
【判断题】 有甲乙两批种子,发芽率分别为0.8和0.7,在两批种子中各任意选取一粒,则恰好有一粒种子发芽的概率为0.24.
①  正确
②  错误