2022英语周报第七期高一答案

第四部分写作第一节短文改错事Offering help is always a good tradition in ourcountries. It is believed that by heelp anothercountnhelpingperson, you are helping yourself. Helping others dodohave a significant effect on a person's happiness. Eventhough we usually feel the urge A compete with othertotaktime to assist otherseneficial to us. Besides, helping people is a goodbenefitway to build trust, particular if you never expect orparticularldemand something to be given to you in retum.anythingNowadays, a rising number of individaIs areready to assist tht others. This has resulted from awonderful community, which people live in harmonynIwherewith each other

6.C【解析】高温可打开DNA分子的两条链A正确;能将N,"N链分开的离心方法为密度梯度离心,B1正确;DNA的半保留复制和全保留复制均可得到图2的结果,C错误;无论DNA是哪种复制方式,均应遵循碱基互补对原则,D正确。,图

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