Why Maria didn’t come to school yesterday______not known.

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问题 Why Maria didn’t come to school yesterday______not known.

选项 A、were
B、are
C、is
D、have been

答案C

解析语法题。本题考查主谓一致的用法。该句是一含有一主语从句的主从复合句。主语从句担任主语时，谓语动词需用动词单数形式，故选C。类例如：What is hard is to do good all one’s life and never do anything bad．Whatever had been said at the meeting was kept secret．It doesn’t seem likely that she can finish her homework as required．(此处用了形式主语it．)

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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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Why Maria didn’t come to school yesterday______not known.

英语

普高专升本

函数f(x)在点x0处的左、右导数存在且________是函数在点x0可与的________条件．

Idon’tthinkyoushouldactonhisadviceimmediately.

Ifyou’redrivinginBrooklyn,Ohio,andfindyourselfattractedbyyoursurroundings,resisttheurgetogetholdofyourcell

Ifyou’redrivinginBrooklyn,Ohio,andfindyourselfattractedbyyoursurroundings,resisttheurgetogetholdofyourcell

Theaudience,______,enjoyedtheperformance.

Theyovercameallthedifficultiesandfulfilledtheplantendaysaheadofschedule,______wassomethingwehadnotexpected.

OneofthewomenIworkwithisgetting______(marry)thisweekend.

Ididn’tknowwhattodo,butthenanidea______tomesuddenly.

Helikedthepaintingverymuch,whichcosthim$1,000.However,hewouldgladlyhavepaid______forit.

OnOct.12,1989,someChinesescientistswereworkingatthecomputerstolookfortheinformationtheyneeded.Suddenlytheys

女性，19岁，学生。近1年来经常脑内反复思考问题。如做数学题时，反复核对答案，明知不对，但又无法控制，最可能的诊断是

湿热灭菌法比干热灭菌法更有效。

已知f(x)在x0处可导，且有，则f’(x0)等于()

A．肺尖部前后B．胸骨两侧第1、2肋间隙C．肩胛间区第3、4胸椎水平D．腋窝下部E．背部第6、7颈椎附近肺泡呼吸音正常人的听诊部位()

该患者投有出现的症状是( )。该患者治疗首选的药物是( )。

教师根据教育、教学目的，按照一定的目标设计的游戏被称为()。

A.腹膜透析B.应用强的利尿剂C.两者均可用D.两者均不用苯巴比妥钠中毒

在执行NEG指令时，对标志位CF有影响，其影响的规则是______。

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