问题补充:
It is said that the gravity on Mars is only aboutof the gravity on earth.
A. three-eighths
B. third-eighth
C. third-eighths
D. third-eight
答案:
(答案→)A. three-eighths
B. third-eighth
C. third-eighths
D. third-eight
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。根据分析可知选项BCD结构有误,故选A。