题目内容

The Changjiang River is ______.

A. not only a trade river but also an agricultural river
B. just an agricultural river
C. not the widest river in the world, but it is the longest one
D. a very famous river mainly because it runs hundreds of miles

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听力原文：What kind of party does the girl want to have？
(9)

A. Birthday party.
B. Graduation party.
C. Wedding ceremony.
D. New Year party.

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设随机变量X和Y独立同分布，记U＝X－Y，V＝X＋Y，则随机变量U和V必然()

A. 不独立
B. 独立
C. 相关系数不为零
D. 相关系数为零

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What is Heaven air？ ______

A. The name of a plane.
B. The name of an airline.
C. The name of a travel agency.
D. The name of an advertising program.

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The starting spot of the Changjiang River may be ______.

A. somewhere in the eastern part of China
B. somewhere in the northern part of China
C. somewhere in the place north of Tibet
D. somewhere in the place north to Tibet

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The Changjiang River is ______.

A. not only a trade river but also an agricultural river B. just an agricultural river C. not the widest river in the world, but it is the longest one D. a very famous river mainly because it runs hundreds of miles

听力原文：What kind of party does the girl want to have？(9)

设随机变量X和Y独立同分布，记U＝X－Y，V＝X＋Y，则随机变量U和V必然()

What is Heaven air？ ______

The starting spot of the Changjiang River may be ______.

A. not only a trade river but also an agricultural river
B. just an agricultural river
C. not the widest river in the world, but it is the longest one
D. a very famous river mainly because it runs hundreds of miles

听力原文：What kind of party does the girl want to have？
(9)