25.Televisions enable us to see things happen almost at the exact moment ______.
A.which they are happening B.when they are happening
C.which they happen D.they have happened
24.-Shall Henry come and play computer games?
-No, _____ he has finished his homework.
A.when B.if C.unless D.once.
23.The police suspected him of carrying guns so they ______ his car, but found nothing.
A.looked up B.turned in C.searched for D.went through
22.-How did you find the long talk given by the headmaster on Teachers' Day?
-_____.I'd rather he _____ it short.
A.Very well; made B.Boring; had made
C.Dull; made D.Exciting; had made
第一节:单项填空(共15小题,每小题1分,满分15分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该选项的标号涂黑。
例:It is generally considered unwise to give a child he or she wants.
A.however B.whatever C.whichever D.whenever
答案是B
21.In face of ______ failure, it is the most important to keep up ______ good state of mind.
A.a;不填 B.不填;a C.the;不填 D.不填;the
22.(本题满分14分)
已知二次函数
(1)若在[-1,1]上至少存在一个实数m,使得求实数a的取值范围;
(2)若对任意,都有,求实数a的取值范围。
21.(本题满分12分)
如图所示:将一矩形花坛ABCD扩建成一个更大的矩形花园AMPN,要求B在AM
以上,D在AN上,且对角线MN过C点。已知|AB|=3米,|AD|=2米。
(1)要使矩形AMPN的面积大于32平方米,请问AN的长应在什么范围;
(2)当AN的长度是多少时,矩形AMPN的面积最小,并求出最小面积。
20.(本题满分12分)
已知函数,直线的图
象都相切,且与函数的图象的切点横坐标为1。
(1)求直线的方程及m的值;
(2)若,求的单调区是及最值。
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