问题补充:
of the chemical factories in their city pouring waste water into the river. It’s too dangerous.
A. Two fifths; are
B. Two fifths; is
C. Two fifth; are
D. Two fifth; is
答案:
(答案→)A. Two fifths; are
B. Two fifths; is
C. Two fifth; are
D. Two fifth; is
解析:英语中一般用基数词表示分数的分子,用序数词表示分数的分母。当分子是一时,分数的分母用单数形式,在表示分数时,当分数的分子大于一时,分数的分母要用复数形式。由分数修饰的主语后面谓语动词的数,和被修饰主语的单复数保持一致。句意:他们城市中五分之二的化工厂把污水注入这条河流。太危险了。结合语境可知选A。