【单选题】【消耗次数:1】
A: I havent received the book which I ordered from you last Saturday. B: Please tell me the serial number on your order sheet. [填空].
You wont regret
Trust me
Ill run a check for you
I promise
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相关题目
【单选题】 ----Will you please go to see the movie Guanyinshan with me ?----No, I wont. I ______ it already.
①  saw
②  have seen
③  see
④  will see
【单选题】 The reason _________ I am writing this letter is to tell you about the meeting on Saturday.
①  because
②  why
③  for
④  as
【判断题】 A: You havent changed your mind, have you? B: Yes, I havent.
①  正确
②  错误
【单选题】 I intend to ______ a larger order if you give me a discount.
①  place
②  play
③  pose
④  pick
【单选题】 A: Mary, Im very sorry to tell you that I wont be able to come this Friday. B: Whats the matter? [填空].
①  Nothing wrong, I hope
②  Its all right with me
③  Im really sorry for that
④  You can come some other time
【单选题】 I am very grateful to you for what you’ve given me and __________ you have done for me.
①  which
②  that
③  all what
④  all that
【单选题】 “Do you think, because I am poor, obscure, plain, and little, I am soulless and heartless? You think wrong!—I have as much soul as you,—and full as much heart! And if God had gifted me with some beauty and much wealth, I should have made it as hard for you to leave me, as it is now for me to leave you. ” This passage is taken from ________.
①  Emma
②  Wuthering Heights
③  Jane Eyre
④  Pride and Prejudice
【单选题】 A: [填空], may I help you? B: Id like to book a single room, please.
①  Holiday Hotel
②  Speaking
③  Hey
④  Im Franco Rossi
【单选题】 I will visit you if Father _________ me.
①  let
②  lets
③  is letting
④  will let
【单选题】 I will visit you if Father ___ me.
①  let
②  lets
③  is letting
④  will let
随机题目
【单选题】 设矩阵<img class=jc-formula data-tex=A=\left( \begin{ matrix } 0 -a 1 \\ 0 1 0 \\ 1 b 0 \end{ matrix } \right) src=https://huaweicloudobs.ahjxjy.cn/CA12941BBBEEF946E902D2301041C8DB.png style=vertical-align: middle;/>,有三个线性无关的特征向量,则 [填空].
①  <img class=jc-formula data-tex=a-b=0 src=https://huaweicloudobs.ahjxjy.cn/84971DEC3F1E3D8E8580AAFC281DBEB8.png style=vertical-align: middle;/>
②  <img class=jc-formula data-tex=a+b=0 src=https://huaweicloudobs.ahjxjy.cn/40A2A6CE2010C11D01B92F45A2710D18.png style=vertical-align: middle;/>
③  <img class=jc-formula data-tex=a-b=1 src=https://huaweicloudobs.ahjxjy.cn/EAF3E979A61D23E44F6BFD3E6EE82A3A.png style=vertical-align: middle;/>
【判断题】 可逆矩阵必可表示为若干个初等矩阵的乘积.
①  正确
②  错误
【判断题】 非齐次线性方程组<img class=jc-formula data-tex=Ax=b src=https://huaweicloudobs.ahjxjy.cn/B2E6B7847F647AEBDF186E16122B2E40.png style=white-space: normal; vertical-align: middle;/>的两个解之和也是<img class=jc-formula data-tex=Ax=b src=https://huaweicloudobs.ahjxjy.cn/B2E6B7847F647AEBDF186E16122B2E40.png style=white-space: normal; vertical-align: middle;/>的解.
①  正确
②  错误
【判断题】 非齐次线性方程组<img class=jc-formula data-tex=Ax=b src=https://huaweicloudobs.ahjxjy.cn/B2E6B7847F647AEBDF186E16122B2E40.png style=vertical-align: middle;/>的两个解之差也是<img class=jc-formula data-tex=Ax=b src=https://huaweicloudobs.ahjxjy.cn/B2E6B7847F647AEBDF186E16122B2E40.png style=white-space: normal; vertical-align: middle;/>的解.
①  正确
②  错误
【判断题】 齐次线性方程组<img class=jc-formula data-tex=AX=0 src=https://huaweicloudobs.ahjxjy.cn/CEC806624F9D642E698219EC94F94B3E.png style=vertical-align: middle;/>的两个解之和也是<img class=jc-formula data-tex=AX=0 src=https://huaweicloudobs.ahjxjy.cn/CEC806624F9D642E698219EC94F94B3E.png style=white-space: normal; vertical-align: middle;/>的解.
①  正确
②  错误
【判断题】 若A可逆,则<img class=jc-formula data-tex={ A }^{ -1 } src=https://huaweicloudobs.ahjxjy.cn/F79D2565ECEF425049B33C8A8CE310AF.png style=vertical-align: middle;/>亦可逆,且<img class=jc-formula data-tex={ ({ A }^{ -1 } })^{ -1 } src=https://huaweicloudobs.ahjxjy.cn/7B8CA2EA28C7DB157CBC387B1269C566.png style=vertical-align: middle;/><img class=jc-formula data-tex==A src=https://huaweicloudobs.ahjxjy.cn/C661B685F11C4121D8ACB18E080E6224.png style=vertical-align: middle;/>.
①  正确
②  错误
【判断题】 若<img class=jc-formula data-tex=n src=https://huaweicloudobs.ahjxjy.cn/6593C84B94B8062EB35F270378D7D9B6.png style=vertical-align: middle;/>阶矩阵<img class=jc-formula data-tex=A,B src=https://huaweicloudobs.ahjxjy.cn/34D561CE3766023EB67E597F39453619.png style=vertical-align: middle;/>则必有<img class=jc-formula data-tex={ (AB) }^{ -1 }={ A }^{ -1 }{ B }^{ -1 } src=https://huaweicloudobs.ahjxjy.cn/4D0D5CA61C6CEACD30AEE46B39C339BC.png style=vertical-align: middle;/>
①  正确
②  错误
【判断题】 A,B均为非零阵,其乘积却可能为零阵.
①  正确
②  错误
【判断题】 单位矩阵的逆矩阵仍是单位矩阵.
①  正确
②  错误
【判断题】 若<img class=jc-formula data-tex=AB=BA src=https://huaweicloudobs.ahjxjy.cn/1A64F48C2D1428E68BA3ECF27171E777.png style=vertical-align: middle;/>,则<img class=jc-formula data-tex={ (AB) }^{ n }={ A }^{ n }{ B }^{ n } src=https://huaweicloudobs.ahjxjy.cn/D31C14D3AA286A0833C1F07420735B74.png style=vertical-align: middle;/>.
①  正确
②  错误