题目内容
The number of the red-crowned cranes will become ____ if we don’t take any action.
A.fewer and fewer | B.less and less | C.smaller and smaller | D.larger and larger |
C
形容词的比较级用and来连接表示越来越怎样,根据语境可知丹顶鹤的数量会越来越少,如果人类不采取措施的话。
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