20019到2022英语周报17期答案

书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

21解:(I)f(x)的定义域为(0,+∞),f(x)=(1分)∞)上单调递增,所以m(x)m=m(x。)=Inr+1+2(10分2所以-2·因为x,∈(8,10),所以∈(4,5),又a∈z,所以a的最大值为4(12分)

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