英语周报七上2022一答案

8.B【解析】因为b=3c=6,△ABC的面积为4E,所以 bcsin A=4/,即6snA=4,得2厘因为A∈(,号),所以A一一m=吉,所以在△ABC中,由余弦定理,得a=D+一么mA=4因为在△ABC中,由正弦定理,得C,p 2所以sinCsIn2sIn

第四部分第一节【参考范文】Native to southeastern Asia and a specialty in our city. the sweet orange ripens in lateSeptember and onward into early spring, I is thick yellow. round and juicy. with a bit sour butsweet taste. Rich in vitamins and minerals which are essential for us to stay healthy. it offers manybencfits, boosting our immune system and giving us betler skin. These are good reasons why thisfruit is so popular and becomes the source of the widely cultivated oranges of commerce among thelocals

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