2022英语周报高一外研10答案

第三节One possible version:Work plays an extremely important role in Americanculture. sope ople find retirement difficultas they may feeluseless without jobs. Retirement can also bring financialproblems as Social Security cheeks dont provide enoughmoney. However, some senior citizens feel happy aboutretirement as they finally get time to do what they reallywant. American government is solving retired citizensproblems and considering their special needs, which is wiseand necessary, because everyone will get oid.

11.D【解析】蛋白质的组成元素为C、H、O、N,有的还含有S和P等,核酸的组成元素为C、H、O、N、P,所以蛋白质和核酸的共有元素是C、H、O、N,A项正确;核酸是生物性状的控制者,蛋白质是生命活动的体现者核酸通过控制蛋自质的合成控制生物体的性状,B项正确;细胞骨架是由蛋白质纤维组成的,有利于维持细胞的形态,C项正确;染色体不是细胞器,D项错误。

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