5.四面體的頂點和各棱中點共10個點,其兩兩連線可組成異面直線的對數(shù)為BA.83 B.87 C.91 D.95
4.上、下兩個底面平行且都是長方形,四個側(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 C.是四棱臺但可能不是正四棱臺 D.存在但可能不是正棱臺
3.一個三棱錐的所有棱長都是1,那么這個三棱錐在平面α上的射影的面積不可能是BA B C D
2.在等差數(shù)列{an}中,a1=,從第10項開始比1大,記,則t的取值范圍是D
A. B. C. D.
1.單位有六個科室,現(xiàn)招聘來4名新畢業(yè)的大學生,要隨機安排到其中的兩個科室且每科室2名,則不同的安排方案種數(shù)為DA. B. C. D.
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
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
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
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
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)動詞的用法。答話的人提了一個建議--你應(yīng)該關(guān)注別人對你的評價的。should可以用來向別人提建議,所以答案為:C
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