【单选题】【消耗次数:1】
——Are you content with her lecture? ——Nowhere near that. It ____.
mayhavebeengood
couldn’thavebeenworse
couldn’thavebeenworse
mustbebetter
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相关题目
【单选题】 —Where is John? I couldn’t find him.— .
①  He is very busy
②  I suppose he could have gone to the meeting room
③  I couldn’t agree more
④  He is good.
【单选题】 ____ by this, he couldn’t say anything.
①  Satisfied
②  Feared
③  Frightened
④  Encouraged
【单选题】 A: I rang you several times yesterday but couldn’t get through. B: [填空]. I was busy.
①  Sorry about that
②  Sounds fine
③  I appreciate that
④  Thats all right
【单选题】 _____ that we couldn’ t catch up with him.
①  So fast he ran
②  So fast did he run
③  So fast ran he
④  Such fast did he run
【单选题】 5. Without your help, I couldn’t ______ the details ______.
①  work…at
②  work…out
③  work…on
④  work…up
【单选题】 There was so much noise in the classroom that the teacher couldn’t make himself _______.
①  heard
②  hearing
③  to hear
④  hear
【单选题】 They talked in whispers, but still, I couldn’t help but __________ their conversation.
①  overhear
②  to overhear
③  overhearing
④  overheard
【单选题】 Try ___ he might, he couldn’t get out of difficulty.
①  when
②  where
③  till
④  as
【单选题】 That young boy couldn’t move because he _______ his leg.
①  breaks
②  broke
③  had broken
【单选题】 2.I couldn’t understand why he pretended ______ in the bookstore.
①  to see me not
②  not to see me
③  not see me
④  to see not me
随机题目
【多选题】 中药作用的差异性产生的原因有( )
①  生物种属不同
②  正常与病态动物
③  不同给药途径
④  不同个体
⑤  不同体质
【多选题】 中药药理学的学科任务有( )
①  促进中医药理论的进步
②  参与中药新药的开发
③  促进中西医结合
④  阐明中药药效产生的机理
⑤  阐明中药药效产生的物质基础
【多选题】 炮制对中药药理作用的影响包括( )
①  消除药物毒性
②  降低药物毒性
③  加强某一药理作用
④  增强药物疗效
⑤  延长作用半衰期
【判断题】 矩阵乘法运算满足消去律
①  正确
②  错误
【判断题】 设A,B均为n阶方阵,则<img class=jc-formula data-tex=\left| AB \right| =\left| A \right| \left| B \right| src=https://huaweicloudobs.ahjxjy.cn/3A978B4916446CB08257F3DE95493C02.png style=vertical-align: middle;/>
①  正确
②  错误
【判断题】 矩阵<img class=jc-formula data-tex=\left[ 1\quad 0\\ 0\quad 2 \right] src=https://huaweicloudobs.ahjxjy.cn/8AE2BE6DA52CD4A1210D19BD18F11419.png style=vertical-align: middle;/>的逆矩阵是<img class=jc-formula data-tex=\left[ 2\quad 0\\ 0\quad 1 \right] src=https://huaweicloudobs.ahjxjy.cn/74F019922584A54BAC584397F9D68604.png style=vertical-align: middle;/>
①  正确
②  错误
【判断题】 若齐次线性方程组Ax=0有非零解,则A的列向量组线性无关
①  正确
②  错误
【判断题】 奇数阶反对称行列式的值等于偶数阶反对称行列式的值,都等于零
①  正确
②  错误
【单选题】 对一个无人学习小组考虑生日问题,五个人生日都是星期日的概率为
①  <img class=jc-formula data-tex=\frac { 5 }{ 7 } src=https://huaweicloudobs.ahjxjy.cn/9D26530C8B7B27F34762CAC4DE82E7F1.png style=vertical-align: middle;/>
②  <img class=jc-formula data-tex={ \left( \frac { 1 }{ 7 } \right) }^{ 5 } src=https://huaweicloudobs.ahjxjy.cn/9AE72107991E946A5D9A0311BBEF7A3D.png style=vertical-align: middle;/>
③  <img class=jc-formula data-tex=\frac { 1 }{ 7 } src=https://huaweicloudobs.ahjxjy.cn/483BA4AB20179A6914F6902D603A51D4.png style=vertical-align: middle;/>
④  <img class=jc-formula data-tex=\frac { 6 }{ 7 } src=https://huaweicloudobs.ahjxjy.cn/C4409F08F738794470FCD7B99552DE8B.png style=vertical-align: middle;/>
【单选题】 矩阵<img class=jc-formula data-tex=\left[ 1\quad 2\quad 3\\ 2\quad 4\quad 6\\ 3\quad 6\quad 9 \right] src=https://huaweicloudobs.ahjxjy.cn/FC54DAA22BDA4F423B37365343FD7AC0.png style=vertical-align: middle;/>的秩为
①  0
②  1
③  2
④  3