问题补充：
Today the forests are getting , we must down too many trees.
A. more and more, prevent people cutting
B. fewer and fewer, stop people cutting
C. smaller and smaller, keep people cutting
D. bigger and bigger, keep people from cutting
答案：
A. more and more, prevent people cutting
(答案→)B. fewer and fewer, stop people cutting
C. smaller and smaller, keep people cutting
D. bigger and bigger, keep people from cutting
解析：
试题分析:此题的基本含义是今天森林的数量越来越少，我们必须阻止再砍伐太多的树木。系动词get表示变得，其后跟形容词构成系表结构。根据英语语法可知表示越来越要用形容词的比较级more and more这一结构来表示，而few的比较级是fewer，固定短语阻止某人做某事要用短语stop sb from doing sth或keep sb from doing sth故选B。
