简介：Kidswhosmokeliketothinkthattheyareimmortal②-oratleastthatiftheystopintime,theirlungswillheal.Butareportinlastweek'sJournaloftheNationalCancerInstitutesuggestsearlysmokingmaytrigger③changesinDNA④thatputyoungsmokersathigherriskforcancereveniftheylaterquit.Researchersstudyinglungcancerpatientsroundthatthosewiththeworstgenetic⑤damagewerenotthosewhosmokedlongestbutthosewhostartedyoungest.What'smore,theearliertheystarted,themorewerethedamage.

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简介：ManyyounglearnersknownothingaboutEnglishwhentheybegintolearnitinschools.Englishlearningtakesthemtoabroaderworldandthiswillmeanspeciallytothechil-drenbothinwaysandinmind.Theyareinterestedinthe“strange”thing,buttheyalsofeelalittlefearaboutit.Thisambivalentfeelingcanbeeasysettlediftheteacherhasvar-iousteachingmethods.

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简介：五十年前的上海已有'东方的巴黎'之称,和国际大都会伦敦、巴黎齐名;今天的上海被视为'全世界的商业城',迟早会成为'东方的纽约'。上个月笔者首次到上海,在5天4夜的短暂逗留中感受到现代上海的大都会动力。上海人口近1700万,数目之大,决定了市场潜力。在上海,上中下各阶层各有消费天地。人民