【判断题】【消耗次数：1】
应当把“全心全意为人民服务”作为总务工作的根本宗旨。
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正确
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错误
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【判断题】
阅读课文II.Which Is Stronger? 判断下列句子表述内容的正误:At the beginning, the Wind thought himself very important and looked down on the Sun.
①
正确
②
错误
【多选题】
This is the_________ motivating force behind the development of adult education.
①
main
②
major
③
many
④
much
【单选题】
_________ do you want to learn French? What is the reason?
①
When
②
Why
③
What
④
Which
【单选题】
Many joggers feel that if they can succeed in jogging, they can succeed in_________ things as well.
①
other
②
the other
③
others
④
another
【单选题】
We passed a pool in which ducks were_________.
①
climbing
②
jogging
③
hiking
④
swimming
【判断题】
<img class=jc-formula data-tex=行列式\quad \begin{ vmatrix } a \begin{ matrix } b c \end{ matrix } \\ d \begin{ matrix } e f \end{ matrix } \\ a \begin{ matrix } b c \end{ matrix } \end{ vmatrix }=0 src=https://huaweicloudobs.ahjxjy.cn/C87E34DE6102091E6EA6E6BA2DE1A9FA.png style=vertical-align: middle;/>
①
正确
②
错误
【单选题】
<img class=jc-formula data-tex=矩阵A经过初等行变换化为B=\left( \begin{ matrix } 2 3 \begin{ matrix } 4 1 \end{ matrix } \\ 0 3 \begin{ matrix } 1 2 \end{ matrix } \\ 0 0 \begin{ matrix } 0 4 \end{ matrix } \\ 0 0 \begin{ matrix } 0 0 \end{ matrix } \end{ matrix } \right) ，则B称为 src=https://huaweicloudobs.ahjxjy.cn/D200394455397DA3DC938E04B9CA22D6.png style=vertical-align: middle;/>
①
行阶梯形矩阵
②
行最简形矩阵
③
标准型矩阵
④
以上三种都不是