2021-2022英语周报四年级答案

第:节长長达(满分25分) Possible versionDate: March 21.2021The annual translation competition on Chinese poetry is going to be held online trom March 2& to 30 byschools English Chub. Any student who would like to participate needs to email the translation totranlslation-202lyahoo.com,andattachano-longer-than-3-minutevideoofpertormingthetranslationinspecially designed scene related to the poem. Then based on ten professional judges decision, there will be afirst-prize winner, two second-prize and five third-prize. The awards are more than wonderful and appealing, suchas Kindles and gil cards of Xinhua BookstoreAll of you, including the overseas students, are welcome to join in the activity. Not only can the experiencehelp you to gain a deeper understanding of Chinese culture and history, but it also gives you an opportunity to showhow well you master both Chinese and English. So what are you waiting for? Just begin your translationThe english Club

33.解析:(1)分子力表现为引力时,随着分子闻距禹的增大,分子力先增大后减小,但分子力儆负功、分子势能一直增大,选項A错误;温度是分子热运动平均动能的标志,质量和温度都相同的氢气和氫气、单亼分于的千均动能相等,但氢气分子个数多,故氢气的内能大,选項B正确;机絨能可能全部转牝为内能,而内能无法全部用来做功从而转化成机能选项C镨误;利用阿伏加德罗常软,气体的摩尔质量和密度,可以估算出气体分子的平均距离、选项D正确:一定质皆的嘿想气体Ⅸ持体积不变、单位体积内分子欤不交,温度升高,分子的平均动能交大,单位时间内撻击单位而积上的分子数增多,选项E正确(2)1)由题意知,p=12atm,n=05L,p=1atm,△=0.2L根揲玻念耳定律可得p-p△=P24分解得P2=16am.2分②)停止喷沔时,喷壶内的气体压强为1am,由玻意耳定律:pp2分解得=08L故喷内剩余消毒液的体积为051.-041.-0.81.=011.2分答案:(1)DE(2))16am②201L

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