2079-2022英语周报高一课标第34答案

3.D【解析】1mmol/L的NaHS溶液对柳条生根有抑制作用,A项错误;0.6mmol/L的NaHS溶液对柳条生根和根的生长都是促进作用,B项错误;NaHS溶液促进柳条不定根生长的最适浓)处于0.1~0.4mmol/L之间,C项错误;一定浓度悉画的NaHS溶液对柳条生根和根的生长有促进作用,项正确。

第三节书面表达One possible version:Dear Peterwhich is becoming popular in ChinaE-hongbao is actually a kind of lucky money from arto relatives and friends during festivals or on special occa-many young people, grabbing e-hongbao on theirhones is a fairly common and exciting activityUnlike the tradition of elders giving lucky money to chil-dren,over half of the people sending hongbao are in their20s. It's just for fun or giving best wishes, while the sumof money matters little. In a word, e-hongbao is bringingnew color to the old traditionNevertheless, I 'm concerned aboutonline payment. So rules and regulationsimproved regarding the e-hongbao system to guarantee itsBest wishesurs,

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