2022年英语周报高二第九期答案

答案与解析】CBCAC本文是文,文章简要介绍了四项新发现21.A细节理解题。根据 Teptowecond measured for the first time一节中“ This is the shortest time unit that has beensuccessfully measured to date.”可知,这是迄今发现的最小时间单位2.D细节理解题。根据word' s oldest known animal一节中“,, sea animals are believed to have lived before thempossibly45 0 million years ago..”可知,海洋生物可能在4.5亿年23.D推理判断题,根据 Plastic-eating bacteria-节中“ The team, said the discovery could help reduce a flood of hard- to recycle就出现了beneficial for the desert."可推断,这两个新发现都能保护环境及【高三核心模拟卷(下)·英语(二)参考爷寄

10.C【解析】由题可知,X为C,Y为O,z为Na,W为Cl。Cl2可以用来配制消毒液,A项正确;Na2CO3NaClo均为强碱弱酸盐,其水溶液均显碱性,B项正确;氧化钠与水的反应不属于氧化还原反应,C项错误;HClO的酸性比H2CO3的酸性弱,D项正确。

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