Which of the following sentences is grammatically INCORRECT？A．From this come three tons of
硫磺,正确答案
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Which of the following sentences is grammatically INCORRECT？
A．From this come three tons of pure sulphur(硫磺).
B．Arthritis is a disease causing pain and swelling in the joints of the body.
C．Billiards is Mr. Fox"s favorite recreation.
D．All the machinery has arrived undamaged.
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正确答案：A
主谓一致。B项主语是“关节炎”，-s结尾的疾病名词，谓语动词使用单数；C项主语是“桌球”，-s结尾的游戏名词，谓语动词使用单数；D项主语是“机器”，集体名词，谓语动词使用单数。A项主语中心词是tons，虽然是表示度量的复数名词，但往往被看作一个整体，谓语动词采取单数形式。