— What does the fresh juice contain?
— of the juice orange. It's very pure.
A. Four-fifth; are
B. Four-fifths; are
C. Four-fifth; is
D. Four-fifths; is
网友回答
A. Four-fifth; are
B. Four-fifths; are
C. Four-fifth; is
(答案→)D. Four-fifths; is
解析：考查分数的表示和主谓一致。分子超过1，分母用复数；主语是不可数名词juice，动词使用is。