Which of the following statements is INCORRECT?

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问题 Which of the following statements is INCORRECT?

选项 A、The United States is a country with varied origins.
B、My mathematics are rather shaky.
C、The Straits of Gibraltar have not lost the strategic importance.
D、One pair of scissors aren’t enough.

答案D

解析 “剪刀”这类由两部分构成且以-s结尾的名词作主语,不带pair等单位词时,视为复数形式,而带单位词时,则由单位词的单、复数形式决定动词单、复数,D项aren’t错误,故选D。以一s结尾的国名,视为一个整体,作单数,A正确;以-ics结尾的学科名词,取其他意义时,便可用作复数,B项的mathematics表示“运算能力”;以-s结尾,且不表示国名的地理名称作主语时,常作复数,因此C正确。
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