The main idea of the first paragraph is . Plants with roots appeared about million years ago.

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问题 The main idea of the first paragraph is ______.
Plants with roots appeared about ______ million years ago.

选项 A、430
B、300
C、330
D、100

答案D

解析 By the end of100 million years，plants had developed their roots(到了1亿年前的后牛段，植物已经形成了它们的根)从以上这句话可以看出，本题的正确答案应该是D.

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成人本科学位英语

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The main idea of the first paragraph is ______. Plants with roots appeared about ______ million years ago.

成人本科学位英语

Ifwomenaremercilesslyexploitedyearafteryear,theyhaveonlythemselvestoblame.Becausetheytrembleatthethoughtofb

Lookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandnotmade.Althoughwewereallbroughtupinthesame

Notalldecisionsarealike.Noriseverydecisionmadeinthesamemanner.Althoughsomeactionsyouundertakederivetheirbas

Parentshavetodomuchlessfortheirchildrentodaythantheyusedtodo,andhomehasbecomemuchlessofaworkshop.Clothes

Americansusuallyconsiderthemselvesafriendlypeople.Theirfriendships,however,tendtobeshorterandmorecasualthanfri

Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsareformed.Itisnoteasytoexplainwhyoneperson

Man:DoyouthinkMarywouldtranslatethisparagraphforme?Woman:Ihaven’tseenhertoday.Question:Whatdoesthewomanimp

MoreCareforTheDisadvantaged(1)在我国弱势群体已经形成。(2)这个群体面临的各种问题。(3)如何帮助弱势群体解决他们的问题?

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The main idea of the first paragraph is . Plants with roots appeared about million years ago.