3. It is said that dogs will keep you ______ for as long as you want when you are feeling lonely.
A. safety B. company C. house D. friend
2. ----May I take your order now?
----We’d like three black _______ and some cake.
A. coffees B. coffee C. cups of coffees D. cup of coffees
1. ----Where is your brother?
----At_______.
A. the Greens B. Mr. Green’s C. the Mr. Green D. the Green’s
17.函数的正实数零点有且只有一个,则实数m的取值范围是 .
求知文化补习学校2009-2010学年第一次月考
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16.已知,若=1,则的取值集合 .
15.已知函数与函数,则这两个函数图像的公共点坐标为 .
14.的最小值是 .
13.已知集合,
则 .
12. 已知的定义域为[-1,1],则的定义域是 .
11. 命题“”的否定是 .
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