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科目： 來源： 題型：

在下列句子中隨機取一單詞,以ξ表示取得單詞THE GIRL PUT ON HER BEAUTIFUL RED HAT所包含字母的個數(shù),則Eξ=____________.

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科目： 來源： 題型：單選題

When you are reading English novels, if you meet with some new words you can this dictionary. Which of the following can’t be used in this sentence?

A.
turn to
B.
refer to
C.
consult
D.
look up

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科目： 來源：2014屆北京市高一上學期期中考試數(shù)學AP班 題型：填空題

A class collects ＄50 to buy flowers for a classmate who is in the hospital. Roses cost ＄3 each， and carnations cost ＄2 each. No other flowers are to be used. How many different bouquets could be purchased for exactly ＄50？_______

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科目： 來源：不詳 題型：填空題

Given BC=1,

in a triangle（三角形）ABC, then the range of length of the side AB (or AC) is_____________________。

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科目： 來源：高二“希望杯”全國數(shù)學邀請賽 題型：填空題

Given BC=1,in a triangle（三角形）ABC, then the range of length of the side AB (or AC) is_____________________。

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科目： 來源： 題型：單選題

Never try to cheat in the exams, because if you do you will never your ill behavior.

A.
get away with
B.
get along with
C.
get out of
D.
get into

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科目： 來源：不詳 題型：填空題

Let a and

be the length of two sides of a rectangle (矩形)，rotate(旋轉(zhuǎn))the rectangle about its
diagonal(對角線)，then the volume(體積) of the revolution(旋轉(zhuǎn)休) obtained is equal to________。

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科目： 來源：高二“希望杯”全國數(shù)學邀請賽 題型：填空題

Let a and be the length of two sides of a rectangle (矩形)，rotate(旋轉(zhuǎn))the rectangle about its
diagonal(對角線)，then the volume(體積) of the revolution(旋轉(zhuǎn)休) obtained is equal to________。