2022 英语周报 高考 课标 49答案

Dear Sir/MadamI'm planning to travel to the USA in the coming JulyTherefore, I'm writing to inquire about travel routesof your agency.【要点一,发出请求ntend to stay in America for about 10 days, durig which I hope to have a look at some unique naturalscenery and have a taste of local customs【高分句型hich引导定语从句】.So, could you please recommend some suitable travel routes? In addition . Id like to know the prices of the routes, covering all the traveling expenses【高分句型二,现在分词 covering作状语】.【要点二,告知相关信息】A reply at your earliest convenience is highly apprecYours,Li Hua

11.AD【解析】从ab边开始进入磁场到cd边进入磁场过程中,只有ab边切割磁感线,产生的电动势为E=Bdv,a、b两点间的电压为U=3p=3Bdv,电流为I1=R;线框完全进人磁场中时,abcd两条边切割磁感线,此时线圈中无电流产生,但a、b两点间有电压,为Um=Bdv;从ab边出磁场开始到cd边出磁场,只有cd边切割磁感线,产生的电动势为E=Bdu,a、b两点间的电压为UEBd电流l2=R,由右手定则可知电流方向与1方向相反,故A、D项正确,B、C项错误。

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