2018-英语周报NP答案

10.B【解析】由f(x-1)=f(5-x)得∫(x)=f(4-x),且f(x)关于x=2对称,由f(x)=f(-x)得-f(-x)=f(4-x),即f(4+x)=-f(x),则f(8+x)=-f函数f(x)是以8为周期的周期函数.在f(x-1)=f(5-x)中令x=-1得f(-2)=f(6)1,又因为f(-2)=-f(2),则f(2)=lg2-2=-1,得a=2.则当0

第三节One possible versionParagraph 1A seat beside her was empty, and Dannis occupied itHe felt a wave of anger swept over him. "Where is my wallet?" he yelled. The black-haired girl glanced up from herreading, with a confused look on her face. Dannis stoodup,glared at her and shouted, "You stole my wallet! "Thecrowds began to gossip. The girl turned deadly pale, loo-king so restless that words failed her. A strange silencehung in the air. Abruptly, she leaped from the seatParagraph 2The gird ran and Dannis ran after her. After a whileDannis finally grabbed her by the arm. At exactly thatmoment,a policeman approached them and asked aboutwhat happened. Dannis hastened to explain it while the girlfrowned with a shake of her head. After further enquiriesthe policeman took out a wallet and handed it to Dannisadding that someone had found it in the toilet. What a mis-take he had made! Overwhelmed by guilt, Dannis made anapology to the girl

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