英语周报 2018-2022 高考 阅课标 22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

16.C【解析】集合{1,2.4}的真子集的个数为23-1=7故①正确;“彐x。∈R>0”的否定是“Ⅴx∈R≤0或—无意义”,故②错误;命题“若a2+b2=0,则a=0且b=0”的否定是“若a2+b2=0,则a≠0或b≠0”,故③错误;命题“若m≠2或n≠8,则m+n≠10”的等价命题是“若n+n=10,则m=2且n=8”,当m=2且n=8时,m+n=10,但当m+n=10时,不一定能推出m=2且n=8,即由“m≠2或n≠8”不能推出“m+n≠10”,反之,由“m+n≠10”能推出m≠2或n≠8”,即“m≠2或n≠8”是“m+n≠10”的必要不充分条件,故④正确.故选C

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