填空题
We have history classes at school.Maybe most of us don’t understand(理解)(60)we study history.(61)fact,if we study history,we can learn (62)personal stories andevents(事件)of people.Studying the past helps us to understand what ourancestors’(祖先)lives were(63).And it also helps us to see how they lived.We all know not everything that happened (64)the past is good.Somehelp us understand the mistakes(错误)of the past.And these mistakes willhelp people not to do (65)same things.People often learn (66)the past tohave a better future.Our ancestors’decisions(决定)have influenced(影响)our life.Thedecisions(67)our own generation(一代人)will finally influence those whocome after us.In this only way,the world is truly connected(被连接).History (68)not just the study of the past.It’s also the study of people,places,(69)events that can influence the future.
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填空题 60()
问答题 一个书架有上、下两层,上层书的本数是下层书本数的3倍。如果把上层书搬到下层54本,那么两层书的本数相同.原来书架上、下层各有多少本书?
单项选择题 患儿男,3岁,突发高热面色苍白,四肢显冷,意识不清,嗜睡,全身中毒症状重,无明显消化道症状。该病最可能哪种细菌引起()