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6、一個(gè)盒子里裝有相同大小的紅球、白球共個(gè),其中白球個(gè),從中任取個(gè),則概率為的事件是B 

A.沒有白球    B.至少有一個(gè)白球    C.至少有一個(gè)紅球   D.至多有一個(gè)白球

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5、設(shè)有直線m、n和平面。下列四個(gè)命題中,正確的是 D

A.若m,n,則m∥n    B.若m,n,m,n,則

C.若,m,則m   D.若m,m,則m∥         

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4、的展開式中x的系數(shù)是 A  A.-4  B.-3  C.3   D.4

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3、已知平面,為垂足,為斜線在平面內(nèi)的射影,,,,則和平面所成的角為C A.  B.    C.  D.

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2、從甲、乙等名同學(xué)中挑選名參加某項(xiàng)公益活動(dòng),要求甲、乙中至少有人參加,則不同的挑選方法共有C   A.140種    B.112種   C.168種   D.70種

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1、已知直線、和平面,則的一個(gè)必要不充分的條件是 D

A.   B.   C.   D.、成等角

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25.(09江蘇) Nine in ten parents said there were significant differences in their approach to educating their children compared with __ of their parents.

A. those        B. one       C. both       D. that

[答案]D

試題詳情

22.(09重慶) Over the past 20 years, the Internet helped change our world in     way or another for the better.

A. any  B. one  C. every    D. either

[答案]B

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23.(09全國2卷) Charles was alone at home, with     looking after him.

A. someone  B. anyone   C. not one  D. no one

[答案]D

(09全國2 )24。The CDs are on sale! Buy one and you get      completely free.

A. other    B. others    C. one   D. ones

[答案]C

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7.(09浙江)-I’ve read another book this week.

-Well, maybe _____ is not how much you read but what you read that counts.

A.     this         B. that              C. there             D. it

[答案]D

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