For three-quarters of its span on Earth, life evolved almost ______ as micro-organisms.

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问题 For three-quarters of its span on Earth, life evolved almost ______ as micro-organisms.

选项 A、precisely
B、instantly
C、initially
D、exclusively

答案D

解析由three-quarters和almost可知，生命在进化过程中，有四分之三的时间几乎都以单一的形式存在。exclusively表示“排外地，专有地”，符合句子语境，故D正确。precisely表示“精确地，正好”；instantly表示“立即地，即刻地”；initially表示“最初，开头”。

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专业英语四级

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For three-quarters of its span on Earth, life evolved almost ______ as micro-organisms.

专业英语四级

Mother’sDayInBritain,Mother’sDayfallsonafewweeksbeforethefestivalofEaster./Butitisalwaysintheearlysp

TheModernFamilyThepast20yearshaveseenenormouschanges/inthelivesandstructureoffamiliesinBritain./Thebi

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Thisprogramcanhelpfreshmenmakeasuccessful_______intocollegelife.

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Raceremainsaprominentand_______issueintheUnitedStates,whichhasstruggledtoovercomealegacyofslaveryanddiscrim

DisguiseManyspeciesofanimalpractisetacticstodisguisetheirappearance,/usuallybyblendinginwiththeirenvironme

TheEnglishLanguageEnglishisthemost【T1】languageintheworldandismorewidelyspokenandwrittenthan【T2】

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