补充203

203.       With a total population of less than two hundred and fewer breeding females than ever before, the American crocodile seemed a decade ago to be in danger of disappearing.

(A) of less than two hundred and fewer

(B) lower than two hundred and less

(C) lesser than two hundred and fewer

(D) fewer than two hundred and less（A）

(E) of fewer than two hundred and of fewer

为什么选a啊。前面a total population 也是可数的，要不怎么有a呢。 后面two hundred 也是可数 没有道理用less阿