友友们帮忙用英语回答下问题哦～～一：Whatfactorsmayweakenone'smemory?二：Whatcoursesareusefulforone'sjob?三：Whydoyouthinksomepeoplesmoke?Whatarethedisadvantagesofsm

　　友友们帮忙用英语回答下问题哦～～

　　一：Whatfactorsmayweakenone'smemory?二：Whatcoursesareusefulforone'sjob?三：Whydoyouthinksomepeoplesmoke?Whatarethedisadvantagesofsmoking?四：NamesomeWesternandChinesefestivals,andspecialdaysthatseemtobeespeciallyimportant,andexplainwhytheyareimportant?请友友们帮忙用英语回答下,简单一点哦…谢谢呀!