[超级全能生]2022高考全国卷地区1月联考B卷英语答案

[超级全能生]2022高考全国卷地区1月联考B卷英语答案，目前我们趣对答案已经整理了[超级全能生]2022高考全国卷地区1月联考B卷英语答案的各科答案和试卷，更多试卷答案请关注本趣对答案。

22.【解析】(1)由题知f(x)=(e2-a)(2e+a)当a=0时,f(x)=2e2>0,故f(x)在R上单调递增;2分当a>0时,f(x)在(-,na)上单调递减,在(lna,+∞)上单调递增3分当a<0时,f(x)在(,(=2)上单调递减,在(m(-2),+2)上单调递增4分(2)①若f(x)无零点当a=0时,f(x)=e>0无零点a>0时,由(1)知:f(lna)>0,解得0 0,解得-2 0时,由(1)知:f(na)=0,解得a=1;当a<0时,由(1)知f(1n(-2))=0,解得a=-2ve所以,当a=1或a=-2√时,f(x)有1个零点③若f(x)有2个零点8分由(1)知:f(hna)=-a2lna<0,因此9分所以f(-1)所以f(-1)×f(na)<0,f(x)在(-1,lna)上有1个零点令g(x)=e -x,g(x递减g(x)<0,g(x)在0)上单调即x 3a>0;即f(ln0时(na,h3a2)上有1个零时,由(1)知10分0,因此此时,(0)=1-a30,所以f(0)xf(m(-2)<0,(x)在0,m(-2)上有1个零点所以当e=e(e-a2),所以f(hn2a2)>2a>0即f(hn(-2)xf(mn2a2)<0,f(x)在(mn(-),m2a2)上有1个零点所以,当a<0时,f(x)有2个零点,则a<-2√e所以当f(x)有2个零点综上,不扣分)12分当-2√e时,f(x)无零点:当a=1或a=-2c时,f(x)有1个零点当a>1或f(x)有2个零点

第三节One possible version:Paragraph 1After reading the diary, the son was filled with tearsand began to reflect on the days when he used to sitogether with his father. His father would patiently answerthe same question all 23 times without feeling irritationwhile his father asked him the same question just fourtimes! The son thought to himself: If I attain old age, howwill my son look at me? Will he think of me as a burden?Will he shout at me because of my poor sight, poor hearingor poor understanding?