of the students in our class interested in micro blogs (微博) on the Internet.
A. Two fifths; is
B. Two fifths; are
C. Two five; is
D. Two-five; are
网友回答
A. Two fifths; is
(答案→)B. Two fifths; are
C. Two five; is
D. Two-five; are
解析：分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分子，序数词表示分母。分子超过1，分母要加s.分数修饰名词时，若该名词是不可数名词只能用单数；若是可数名词，用单数或复数均可。但是，若它们在句子中作主语，则谓语动词是用单数还是复数取决于名词，即与分数所修饰的名词保持一致。