问题详情:语法填空阅读下面短文,在空白处填入一个适当的词,或填人括号中所给单词的正确形式(每空不多于3个单词)。Childrentodayhavemanythingstoplaywith.Theycanwatchtelevision,surf___1___Internet,orplayvideogames.Butwhatdoyouthinkchildren___2___(do)forfunlongago...
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问题详情:I still find it hard to imagine that such a clever child __________make such a foolish mistake. A. shall B. must C. can D. should 【回答】D知识点:虚拟语气与情态...
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问题详情:TVPROGRAMMESChannel1Channel218:00 AroundChina18:30 Children’sprogramme19:00 News19:30 Weatherreport19:40 Aroundtheworld20:10 TVplay:Sisters21:00 Englishfortoday21:15 Popularmusic21:55 Talkshow17:45 Computerstoday18:10 Foreignarts1...
2020-12-07 27660
问题详情:chIL基因是蓝细菌拟核DNA上控制叶绿素合成的基因。为研究该基因对叶绿素合成的 控制,需要构建缺失chIL基因的变异株。构建过程如下图所示,下列叙述错误的是( ) 基因的基本组成单位是脱氧核糖核苷* B.①②过程应使用不同的限制*核*内切酶 C....
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