25.I would appreciate , to be frank, if goods could be delivered as soon as possible.
A.you B.this C.it D.myself
24.While building a tube through the mountain, .
A.an underground lake was discoverd
B.there was an underground lake discovered
C.a lake was discovered underground
D.the workers discovered an underground lake
23.Eventually, the President had to leave office public pressure in order to ease the tension of the situation.
A.in favor of B.in response to C.n return for D.in honour of
22.There are plenty of jobs in the western part of the country.
A.present B.available C.precious D.convenient
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,并在答题卡上将该项涂黑。
21.---Stay a bit longer, please. It’s been such fun having you here.
---Thank you, but I’ve got early start tomorrow morning.
A./; the B.a; an C./;an D.the; an
22.(本小题满分14分)
设直线过抛物线
(I)若,求MN所在直线方程;
(II)若轴上截距的取值范围;
(III)抛物线C的准线的夹角为定值。
21.(本小题满分12分)
设函数
(I)若函数处的切线为直线相切,求a的值;
(II)当时,求函数的单调区间。
20.(本小题满分12分)
甲、乙两人共同抛掷一枚硬币,规定硬币正面朝上甲得1分,否则乙得1分,先积得3分者获胜,并结束游戏。
(I)求在前3次抛掷中甲得2分,乙得1分的概率;
(II)若甲已经积得2分,乙已经积得1分,求甲最终获胜的概率。
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