2022-2022学年 英语新课标周报答案

17.(1)囤[3s3;F>P>S;B(各1分)(2)sp3;H2O中孤电子对与成键电子对存在较强的排斥作用,导致键角变小(各1分)(3)H2O分子之间的氢键数目是HF分子间氢键数目的2倍(2分)(4)Ca2+、O-电荷数是Na+Cr的2倍,晶格能CaOD>NaC(2分),正人面体(1分);aN(2分)

书面表达One possible versionI求Dear PeterI heve good news for you Our school Food Club will hold a dumpling- making activity. As you're interestedin Chinese food, I'm writing to invite you to join in the activity with me.As a kind of traditional Chinese food, dumplings are very popular during festivals, especially in the SpringFestival, when people will get together to make dumplings. The activity will begin at g am next Saturday in theschool canteen. First, (chefs) will teach us how to make dumplings step by step. Then, there will be a dumplingmaking competition in groups. Finally comes the most exciting part--enyoying our dumplings.Looking forward to your coming.Your

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