2022高二英语周报外研42期答案

不正确;f(x)的图象上所有点的横坐标伸长为原来的2倍,得到y=sn(x ) 2,再向左平移个单位长度,得到y=sn(x 哥) =c05x z,是偶函数,故C正确;(x)的图象向右平移1个单位长度则所得函数为y=sin2x 2,为非奇非偶函数,故D不正确故选C.1C【解析】由f(a)=-,f(B)=方,得x=a时f(x)取到最小值,x=B为f(x)对称中心的横坐标,又l-的最小值为子故一→o=2即f()s(x -) 2,最小正周期为x故A不正确;由于(-否)=s(-吾 ) 2=2,所以(x)的图象关于点(-)中心对称故B

第三节One possible versionParagraph 1As the cashier put the DVD into a plastic bag, / walkeder to the younger woman. "Is that your mom? "I askedhalfway expecting her to tell me it was none of my businessBut she rolled her eyes and said, "Yeah. "I smiled toshow her I wasn't criticizing.Cherish her, "I said. Andn I answered her curious expression by saying, "Whenshes gone, it's the little moments like this that'llcomeack to you. " It was true. I missed my mother still andremembered the moments when I was so impatient as tomake her life miserableParagraph 2The elderly woman moved with her deliberate slownessback to her daughter. Together they made their way towardsthe exit of the video store. They stood there for a momentside bywaiting for the rushing holiday current and foin it. Then the daughter glanced over andmomentarily regarded her mother. And slowly, almostreluctantly, she placed her arm with apparently unaccus.tomed affection around her mother's shoulders and gentlguided her back into the deluge.

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