Question

     of the juice        orange. It’s very pure.

A．Fourth five, are

B．Four fifths , are

C．Fourth five, is

D．Four fifths, is

Answer 1

D

解析試題分析：句意：橘汁的五分之四是橘子。它非常純正。分數的表達為分子用基數詞，分母用序數詞，當分子大于一時，分母的序數詞用復數形式；又因juice為不可數名詞，故謂語動詞用單數形式；故選D。
考點：考查分數和主謂一致。