【单选题】【消耗次数：1】
16.- ______ do you like the new play? - It’s good and interesting.
①
How
②
Which
③
What
④
Whom
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【单选题】
Mary: How do you like Professor White’s lecture? John: ____
①
He talked about economy.
②
He teaches Class 2 students.
③
Very much.
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He is a middle-aged professor.
【单选题】
What role does a teacher play in the following activity? T: do you have any hobbies? S: yes, I like singing and dancing. T: Uhm, and...? S: I also collect coins. T: Oh, really, how many...have you already...collected?
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Controller
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Assessor
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Organizer
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Prompter
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I like the freedom of deciding where ( ) ,what to do and how long to stay.
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goes
②
be going
③
to go
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go
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What animal do you like [填空]? I like all kinds of animals.
①
better
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best
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very
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well
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How do you do? Glad to meet you._________
①
Fine. How are you?
②
How do you do? Glad to meet you, too.
③
How are you? Thank you!
④
Nice. How are you?
【单选题】
A: How do you do? B: [填空]
①
Fine, thank you.
②
How do you do?
③
Not too bad.
④
Very well.
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-Which job do you think I should take the counter’s job or the waiter’s job?-____.
①
That’s all right
②
It’s your own matter
③
It’s up to you
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It’s none of your business
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—Cherry, what do you think of today’s English homework?— .
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little difficult.
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The teacher assigned a lot.
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No problem.
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No way.
随机题目
【判断题】
设<img class=jc-formula data-tex=\Omega src=https://huaweicloudobs.ahjxjy.cn/5C5240ED1AA8F3BE6C84F2DC0A12615D.png style=vertical-align: middle;/>为样本空间，<img class=jc-formula data-tex=\phi src=https://huaweicloudobs.ahjxjy.cn/66F04549ED509B01B218D3ABA3FAAC80.png style=vertical-align: middle;/>为不可能事件，<img class=jc-formula data-tex=B src=https://huaweicloudobs.ahjxjy.cn/4CEB8696C01DCD0803D103905D21BDE4.png style=vertical-align: middle;/>为样本空间中任一事件，则<img class=jc-formula data-tex=P(\Omega |B)=1，P(\phi |B)=0 src=https://huaweicloudobs.ahjxjy.cn/E3560C7120938EAF3BBE8AA2AB51E62A.png style=vertical-align: middle;/>
①
正确
②
错误
【判断题】
若事件A与事件B相互独立，则<img class=jc-formula data-tex=P(A\cup B)=P(A)+P(B)-P(A)P(B) src=https://huaweicloudobs.ahjxjy.cn/753E442A4835A5CA02DDB6CFC590B985.png style=vertical-align: middle;/>
①
正确
②
错误
【判断题】
对于条件期望，结论：<img class=jc-formula data-tex=E(E\{ \xi |\eta \} )=E\xi src=https://huaweicloudobs.ahjxjy.cn/2844601DA16A7B9D73F7A3F2FD9FD679.png style=vertical-align: middle;/>成立。
①
正确
②
错误
【判断题】
行列式<img class=jc-formula data-tex=\left| 1\quad \quad 1\quad \quad 1\\ a\quad \quad b\quad \quad c\\ bc\quad ac\quad ab \right| =(a-b)(b-c)(c-a) src=https://huaweicloudobs.ahjxjy.cn/A131FCAD19586B83A687EF03AD81C1FA.png style=vertical-align: middle;/>
①
正确
②
错误
【判断题】
设两点分布的数学期望<img class=jc-formula data-tex=E\xi =p src=https://huaweicloudobs.ahjxjy.cn/165C9449B4A51B79CA802DDDC72C5EA5.png style=vertical-align: middle;/>,则其方差为<img class=jc-formula data-tex=D\xi =p(1-p) src=https://huaweicloudobs.ahjxjy.cn/B7CD506C431B0EF1C8E3E0D0F68E706D.png style=vertical-align: middle;/>
①
正确
②
错误
【判断题】
对于任意的随机变量<img class=jc-formula data-tex=\xi src=https://huaweicloudobs.ahjxjy.cn/C2EDB2E335663DD9541AAD0FF4E4B826.png style=vertical-align: middle;/>，若<img class=jc-formula data-tex=E\xi =a,又D\xi src=https://huaweicloudobs.ahjxjy.cn/5CA073749A370CA9F0FE5ABB863C350F.png style=vertical-align: middle;/>存在，则对任意正数<img class=jc-formula data-tex=\E src=https://huaweicloudobs.ahjxjy.cn/3AF73A7F2D0DC5BD2560E7F9A0308BF8.png style=vertical-align: middle;/>，有<img class=jc-formula data-tex=P(|\xi -a|\ge \E )\le \frac { D\xi }{ { \E }^{ 2 } } src=https://huaweicloudobs.ahjxjy.cn/6C8DC8EB086D8907F30BEE30BEA0A541.png style=vertical-align: middle;/>
①
正确
②
错误
【单选题】
行列式<img class=jc-formula data-tex=\left| \quad 3\quad \quad 0\quad \quad 0\\ \quad 2\quad -5\quad \quad 2\\ -7\quad \quad 2\quad -1 \right| src=https://huaweicloudobs.ahjxjy.cn/75EA26856333390FEF530C6950493E37.png style=vertical-align: middle;/>中元素<img class=jc-formula data-tex={ a }_{ 12 }=0 src=https://huaweicloudobs.ahjxjy.cn/898BB4B4A69FC83CDA08A2477A059D6B.png style=vertical-align: middle;/>的代数余子式
①
<img class=jc-formula data-tex=\left| \quad 2\quad \quad 2\\ -7\quad -1 \right| src=https://huaweicloudobs.ahjxjy.cn/86F22CD7D3E3EEE7FC9A595E69983C1F.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=-\left| \quad 2\quad \quad 2\\ -7\quad -1 \right| src=https://huaweicloudobs.ahjxjy.cn/3AC05783A950AAFBDAC89333E8106DD2.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=\left| \quad 3\quad \quad 0\\ -7\quad -1 \right| src=https://huaweicloudobs.ahjxjy.cn/1FC57E104BF487803ECE7294242F0A06.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=\left| -5\quad \quad 2\\ \quad 2\quad -1 \right| src=https://huaweicloudobs.ahjxjy.cn/6671E2972DD66C7AB9083C3BCA3DB226.png style=vertical-align: middle;/>
【单选题】
设<img class=jc-formula data-tex=A=\left[ 3\quad -1\\ -6\quad 2 \right] ，B=\left[ 1\quad 2\\ 3\quad 6 \right] src=https://huaweicloudobs.ahjxjy.cn/E8ECB8CFD842759E79B4E4322314F8AD.png style=vertical-align: middle;/>则有
①
<img class=jc-formula data-tex=AB=\left[ 0\quad 0\\ 0\quad 0 \right] src=https://huaweicloudobs.ahjxjy.cn/189A00E23E2AF834BDCB39C27A5F842B.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=AB=\left[ 1\quad 0\\ 0\quad 1 \right] src=https://huaweicloudobs.ahjxjy.cn/3198D8D000E0BB1E9F591FFDEE562423.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=AB=\left[ 0\quad 1\\ 1\quad 0 \right] src=https://huaweicloudobs.ahjxjy.cn/4C8F95E028361DED4A35E26CA720D8A5.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=AB=\left[ 1\quad 2\\ 3\quad 1 \right] src=https://huaweicloudobs.ahjxjy.cn/FE8F75C8AA963A8CFA7FBD504737391E.png style=vertical-align: middle;/>