【单选题】【消耗次数：1】
He______advantageofthemomenttoleavetheroom.
①
had
②
got
③
took
④
made
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He made a mistake, but then he corrected the situation it got worse.
①
until
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when
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before
④
as
【单选题】
20. Only when he had handed in his exam paper ____ he had made several mistakes.
①
he has realized
②
does he realize
③
has he realized
④
did he realize
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25．It was the training _______ he had at school _______ made him good jumper．
①
what；what
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that；that
③
what；that
④
that；had
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It was the training that he had as a young man ____made him such a good engineer.
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that
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has
③
what
④
later
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After the Minister of Education had finished speaking at the press conference, he was made ______ all sorts of awkward questions.
①
answer
②
answering
③
answered
④
to answer
【单选题】
If he had worked harder, he ___.
①
would succeed
②
had succeeded
③
should succeed
④
would have succeeded
【单选题】
Had he worked hard, he _____ the exams.
①
must have got through
②
would have got through
③
would get through
④
could get through
【单选题】
_____ that it was going to rain, he took a raincoat with him.
①
Seeing
②
Saw
③
Seen
④
To see
【单选题】
In the past he often made his sister___, but now he is often made __by his sister.
①
to cry; to cry
②
cry
③
to cry; cry
④
cry; to cry
【单选题】
阅读理解：阅读下列短文，回答文后问题，选择最佳答案Robert had just moved into the street and he felt strange that he was not wanted. He knew that perhaps the other boys were trying to get an idea of what kind of a boy he was. This did not help him to make himself less lonely. He was new and he had to be tested. Still, proving himself would not be all that easy. He did not want to run with the boys or get into something against the law to prove that he was strong. No! He must show what he was made of in a more helpful way. That’s when he got the idea.The next day was Saturday. He knew that most of the boys would be down on the playground and choose up sides for the Saturday game. Robert knew he could play well and that just might be enough to prove he was strong, and to make friends with them. He arrived early and did his step exercises. He shot the ball several times and did some other exercises—the most difficult and most wonderful in basketball. Then the boys came. Robert went through what he had done before the game and showed what he could do. No one said a word. The boys just looked at each other and thought about it. In the end, when it was all over, the biggest of the group just smiled and shook his head. Robert knew he had made it.2. Why would it not be easy for Robert to prove himself?
①
Because he was not sure if he was really strong.
②
Because he was new and was not wanted in the street.
③
Because the other boys had found out what kind of a boy he was.
④
Because he must choose the best way to prove himself.
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【判断题】
向量组<img class=jc-formula data-tex={ \alpha }_{ 1 },{ \alpha }_{ 2 },\cdots { \alpha }_{ m } src=https://huaweicloudobs.ahjxjy.cn/E35727949B8AF932019F222988F0B595.png style=vertical-align: middle;/>中任一向量都可由该向量组本身线性表示
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正确
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错误
【判断题】
对样本空间中的任意事件A,B都有<img class=jc-formula data-tex=P(A\cup B)=P(A)+P(B) src=https://huaweicloudobs.ahjxjy.cn/B79C1AE12B5A07197746EF3B0532EC60.png style=vertical-align: middle;/>成立
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正确
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错误
【判断题】
正交矩阵A的n个行向量构成n维向量空间<img class=jc-formula data-tex={ R }^{ n } src=https://huaweicloudobs.ahjxjy.cn/8C63E53B60CE3373761DE0F0D5F89086.png style=vertical-align: middle;/>的一个标准正交基。
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正确
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错误
【判断题】
<img class=jc-formula data-tex={ \begin{ pmatrix } 1 1 \\ 1 2 \end{ pmatrix } }^{ -1 }=\begin{ pmatrix } 2 -1 \\ -1 \quad 1 \end{ pmatrix } src=https://huaweicloudobs.ahjxjy.cn/EEEF78D8A9C6A3D538987CB168D2622E.png style=vertical-align: middle;/>
①
正确
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错误
【判断题】
对于矩阵A,B<img class=jc-formula data-tex={ (AB) }^{ T }={ A }^{ T }{ B }^{ T } src=https://huaweicloudobs.ahjxjy.cn/C35899271540C4AFE341D16741CADC6D.png style=vertical-align: middle;/>
①
正确
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错误