Which of the following sentences is grammatically INCORRECT?

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问题 Which of the following sentences is grammatically INCORRECT?

选项 A、Economics study how money and goods are produced and used.
B、One million dollars is a large sum of money.
C、Bronchitis affects your bronchial tubes.
D、His whereabouts was unknown to his wife.

答案A

解析 考查主谓一致。Economics作“经济学”讲时为不可数名词,谓语动词用第三人称单数形式,因此A项语法上错误。One million dollars看作整体,属于单数,故谓语用is;Bronchitis“支气管炎”虽以s结尾,却是不可数名词,谓语用第三人称单数形式:whereabouts视为名词单、复数均可,因此D也正确。
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