单选题 2.  Which of the following sentences is INCORRECT?
【正确答案】 B
【答案解析】 集合名词、主谓一致。A项vermin、C项Police作主语时,谓语动词用复数,此外还有militia,cattle;B项poetry和D项cutlery作主语时,谓语动词用单数,同类还有machinery,jewellery,merchandise。故B项错误。