第28题: [填空题]According to Darwin, random changes that enhance a species’ ability for survivingare naturally selected and passed on to succeeding generations.
A. a species’ B. for surviving C. are D. to succeeding 参考答案:B, 改for surviving为to survive 答案解析:[试题分析] 本题考查非谓语动词的用法。
[详细解答] 由于ability一词要求不定式做后置定语来修饰,故只有将for surviving改为to survive。