24. ------ Who is that man over there? _______ it be our teacher?
------ No, it _______ not be our teacher. It _______ be Mr. Zhang.
A. can ; can; must B. must; must; can
C. can; must; must D. can; must; can
23. Everyone in the village knew him, so we had _______ his house.
A. no difficulties to find B. some difficulties in finding
C. no difficulty to find D. no difficulty in finding
22. Does John know any other foreign language _______ French?
A. except B. but C. besides D. beside
21. ------ I heard that as many as 100 people were killed in that coal mine accident?
------ Yes, ______ news came as ______ shock to us
A. the ; / B. the ; a C. /; a D. /; /
9、2i-3是关于x的方程的一个根,求实数p,q的值
8、(江苏省前黄高级中学2008届高三调研)已知实数x,y满足条件, (为虚数单位),则的最小值是 .
7、(贵州省贵阳六中、遵义四中2008年高三联考)若(为虚数单位),则的值可能是 ( )
A. B. C. D.
6、(2009盐城中学第七次月考)已知实数满足(其中是虚数单位),
则双曲线的离心率为 .
5、009金陵中学三模)已知复数,它们所对应的点分
别为A,B,C.若,则的值是 5 .
4、(2009汕头一模)已知复数z=3+4i所对应的向量为,把依逆时针旋转θ得到一个新向量为。若对应一个纯虚数,当θ取最小正角时,这个纯虚数是( )
A .3i B .4i C .5i D.-5i
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