______ under a microscope, a fresh snowflake has a delicate six-pointed shape

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问题 ______ under a microscope, a fresh snowflake has a delicate six-pointed shape

选项 A、Seeing
B、Seen
C、To see
D、To be seei

答案B

解析句意：在显微镜下观察，就会发现一片新采的雪花呈精致的六边形。本题考查非谓语动词。分析句子结构可知，前半句做整个句子的状语。再看动词和主语之间的关系，如是主动，用现在分词；如是被动，则用过去分词。本句中的snowflake与see之间是被动关系，因此选B。

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本试题收录于：英语题库普高专升本分类

英语

普高专升本

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______ under a microscope, a fresh snowflake has a delicate six-pointed shape

英语

普高专升本

Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea

Historianscan’ttelluswhen,whereor【71】thefirstfoodwascooked.Inearliest【72】whenpeoplehadeatentheirfood【73】,

Inordertolearnaforeignlanguagewell,itisnecessarytoovercomethefearofmakingmistakes.Iftheprimarygoaloflangu

Howmenfirstlearnedtoinventwordsisunknown;inotherwords,theoriginoflanguageisamystery.Allwereallyknowistha

Hewascaughtintherainyesterday;______,hefellillthismorning.

Professionalpeopleappreciate______whenitisnecessarytocancelanappointment.

You’dbetterspeakslowly;otherwiseyouwillfailtomakeyourself(understand)______.

Everheardtheoneaboutthedoctorwhogavehispatientsixmonthstolive?Whenthemancouldn’tpayhisbill,thedoctorgave

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Eachday,computershelpmillionsofpeopledotheirjobsmoreeffectively.Forexample,theycanhelpmanagersdecideonafutu

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