第三部分写作第一节One possible versionDear ericHow are you doing? I'm writing the email to tell you somegood news in our school. Our schools Paper-cutting Club islooking for new members. Its goal is to promote the culture of thepaper-cutting and make our school life colorfulI know you like paper-cutting and you're expert at itTherefore, I'd like to invite you to join the club. But you'rerequired to send your information to the club bcforc Junc 29thYour early reply is highly appreciatedYours sincerelyLi Hua第二节
19.〈本题满分14分)本题共有2个小题,第1小题满分6分,第2小题满分8分.解(1)答案不唯一.构造说明是单调增函数函数的取值满足要求lox 1x∈5o1500]就是符合企业奖励的一个函数模型理由根据一次函数的性质,易知,y随x增大而增大,即为增函数5043>0时x15001=16<20当x=1500时,即奖金金额y>0且不超过20万元故该函数是符合企业奖励要求的一个函数模型2)当05x50时,易知x50-1=2>0是增函数,且当x=50x500l=l1<20x=500时即满足奖金y>0且不超过20万的要求x↓1故当50≤x≤500时符合企业奖励要求1-af(x)=19当50
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