27. , and the problem will be worked out..
A.If you have a bit more effort B.Having a little effort
C.A bit more effort D.There being a little effort
26.I can’t give you an answer right now. I’d like more time to consider my decision.
A.still B.fairly C.quite D.a lot
25.The main issue at the APEC meeting was a climate – change plan by Australia’s Howard and backed by Bush.
A.put out B.put off C.put away D.put forward
24.You may just give me a call or drop in, will do.
A.Either B.All C.Each D.Neither
23.Great efforts to increase grain production if food shortages are to be avoided.
A.could be made B.must be made
C.might be made D.would be made
22.I will never forget my teacher’s advice: “As long as you can affect life of your child in an active way, you’ve been success.”
A./ ; the B.a; / C.a; the D.the; a
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.--- Don’t forget to take the message to my teacher.
--- .
A.Yes, I will. B.No, I won’t.
C.I don’t think so D.Sorry, I don’t
22.(本小题满分14分) 对函数Φ(x),定义fk(x)=Φ(x-mk)+nk(其中x∈(mk,
m+mk],k∈Z,m>0,n>0,且m、n为常数)为Φ(x)的第k阶阶梯函数,m叫做阶宽,n叫做阶高,已知阶宽为2,阶高为3.
(1)当Φ(x)=2x时 ①求f0(x)和fk(x)的解析式; ②求证:Φ(x)的各阶阶梯函数图象的最高点共线;
(2)若Φ(x)=x2,则是否存在正整数k,使得不等式fk(x)<(1-3k)x+4k2+3k-1有解?若存在,求出k的值;若不存在,请说明理由.
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