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5.四面體的頂點(diǎn)和各棱中點(diǎn)共10個(gè)點(diǎn),其兩兩連線可組成異面直線的對(duì)數(shù)為BA.83  B.87   C.91  D.95 

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4.上、下兩個(gè)底面平行且都是長(zhǎng)方形,四個(gè)側(cè)面都是全等的等腰梯形的六面體D

A.是不存在的  B.是正四棱臺(tái)  C.是四棱臺(tái)但可能不是正四棱臺(tái)     D.存在但可能不是正棱臺(tái)

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3.一個(gè)三棱錐的所有棱長(zhǎng)都是1,那么這個(gè)三棱錐在平面α上的射影的面積不可能是BA B C  D

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2.在等差數(shù)列{an}中,a1,從第10項(xiàng)開始比1大,記,則t的取值范圍是D

 A.    B.    C.    D.

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1.單位有六個(gè)科室,現(xiàn)招聘來4名新畢業(yè)的大學(xué)生,要隨機(jī)安排到其中的兩個(gè)科室且每科室2名,則不同的安排方案種數(shù)為DA. B.  C.  D.

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11.(09江蘇) He did not regret saying what he did but felt that he      it differently.

A. could express             B. would express

C. could have expressed         D. must have expressed

[答案]C

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10.(09全國2) I can’t leave. She told me that I      stay here until she comes back.

A. can    B. must   C. will   D. may

[答案]B

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9.(09重慶)  -Hi, Tom. Any idea where Jane is?

-She_____in the classroom. I saw her there just now.

A. shall be  B. should have been

C. must be   D. might have been

[答案]C

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8.(09天津) This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.

A. would      B. should   C. could    D. might

[答案]B

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7.(09四川) -I don’t care what people think.

-Well, you _______

A. could   B. would  C. should     D. might

[答案]C

[解析]考查情態(tài)動(dòng)詞的用法。答話的人提了一個(gè)建議--你應(yīng)該關(guān)注別人對(duì)你的評(píng)價(jià)的。should可以用來向別人提建議,所以答案為:C

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