Agriculture is the country’s chief source of wealth, wheat _____ by far the biggest cereal crop.

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问题 Agriculture is the country’s chief source of wealth, wheat _____ by far the biggest cereal crop.

选项 A、is
B、been
C、be
D、being

答案D

解析分析本句结构，由于逗号不能连接两个完整的句子，因而逗号后所接部分只能是非谓语形式，加上它有自己的主语wheat，则构成独立主格结构，表示伴随状态。A项is和C项be为谓语动词，不可选；而B项been为过去分词，只见于独立结构中的被动形式，不合题意。请注意，此处being也可省略，“主语+名词”的结构也是独立主格的形式之一，如：Two hundred people died in theaccident，most of them children．

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专业英语四级

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Agriculture is the country’s chief source of wealth, wheat _____ by far the biggest cereal crop.

专业英语四级

Little______aboutherownsafety,thoughsheherselfwasingreatdanger.

Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanc

Thewayinwhichpeopleusesocialspacereflectstheirsocialrelationshipsandtheirethnicidentity.EarlyimmigrantstoAmer

AProfessorstoodbeforehisphilosophyclassandhadsomeitemsinfrontofhim.Whentheclassbegan,wordlessly,hepickedup

Peopletravelinglongdistancesfrequentlyhavetodecidewhethertheywouldprefertogobyland,sea,orair.Hardlycananyon

Televisioncanbeawonderfullearningtool.Thirty-oddyearsago,"SesameStreet,""TheElectricCompany"and"Mr.Rogers’Neig

DearKind-Trustee-Who-Sends-Orphans-to-College,HereIam!Itravelledyesterdayforfourhoursinatrain.It’safunnysen

The_____talksbetweenChinaandtheUnitedStateswerethebaseofthelateragreement.

A、Ithasnothingtodowiththeman’spresentation.B、Itfocusesonyoungmenandmobilephones.C、Itshowshowimportantmobile

Maybeyoucould______yourselfasawaiterandsneakinthere.

在道路上发生未造成人员伤亡且无争议的轻微交通事故如何处置？

Wespendalotoftimelookingattheeyesofothersforsocial【C1】________—ithelpsusunderstandaperson’semotions,andma

不完全骨折是

某城市道路，路面为沥青混凝土，路宽21m，采用双侧对称布置灯，灯具仰角θ为15°，见下图。请回答下列问题。若灯具采用半截光型，灯具高度为13m，按灯具的配光类型、布置方式，计算灯具的间距不宜大于下列哪一项数值?()

苏轼是__________书风的倡导者，传世作品《黄州寒食诗帖》。

加强党的执政能力建设，必须坚持的核心是()。

下列关于我国地理知识的相关说法，不正确的是()。

Accordingtothepassage,Aprilfool’sDayoriginatedin______.Theword"pranks"(Line1Para.3)means"______."

A—CrisiscommunicationJ—SocialresponsibilityB—CrisismanagementK—PressofficeC—Employ

Accordingtothepassage,Aprilfool’sDayoriginatedin.Theword"pranks"(Line1Para.3)means"."