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【单选题】
四阶行列式D的值为m,将其依次做如下变换后 交换D的第二三列 将行列式的所有元素都乘以2 将第一行的三倍加到第四行 将第一列元素除以2 做完这些变换后,行列式的值为( )A.
-m
B.
-2m
C.
2m
D.
-8m
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【单选题】According to the author, Gladwell's new book Outliers is mainly______.
A.
about the importance of social arrangements to personal success
B.
A descriptive study of exceptionally talented individuals
C.
to discuss why some people have more opportunities than others
D.
to explain why Bill Gates is much luckier than others
【简答题】会计方法是会计的基本方法，包括设置账户、复式记账、填制和审核会计凭证、登记账簿、成本计算、财产清查和编制会计报表。 （ ）
【单选题】Nina also says that while you are online, you are not doing anythin g else, like ______. People constantly talk about how much time they waste online.
A.
cooking
B.
cleaning
C.
reading
【单选题】Although the author says that battles are horrible, he also says that______.
A.
most people find fascination in them
B.
there is no battle aim worthy of the name
C.
one should love life and not death
D.
fighting to end battles is justifiable
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