题目内容

输入数组,最大的与第一个元素交换,最小的与最后一个元素交换,输出数组。

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在沿水平方向的匀强磁场中,有一圆形金属线圈可绕沿其直径的坚直轴自由转动。开始时线圈静止,线圈平面与磁场方向既不平行也不垂直,所成的锐角为α。在磁场开始增强后的一个极短时间内,线圈平面

A. 维持不动
B. 将向使α减小的方向转动
C. 将向使α增大的方向转动
D. 将转动,因不知磁场方向不能确定α会增大还是会减小

Where does the idea of “American Dream” come from?

A book named “Ragged Dick”.
B. The Declaration of Independence.
C. Henry David Thoreau.
D. The movie, The Pursuit of Happyness.

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“The American Dream” means that_________ can achieve fame and fortune in theUnited Statesthrough hard work, self-reliance, and sacrifice.

A. only rich people
B. the white
C. anyone
D. immigrants

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Which of the following is not the adversity that Chris faces in life?

A. His embarrassing economic condition.
B. His life with a toddler son as a single father.
C. His 6-month Internship without any payment.
D. His strong determination with amazing willpower.

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