2. 外语
  3. Certain species disappeared or became extinct___________________(是由于产生了新物种形式，它们可以更好地适应当时不断变化的地球环境)

Certain species disappeared or became extinct___________________(是由于产生了新物种形式，它们可以更好地适应当时不断变化的地球环境)

admin2010-06-11  73
问题 Certain species disappeared or became extinct___________________(是由于产生了新物种形式，它们可以更好地适应当时不断变化的地球环境)
选项
答案Certain species disappeared or became extinct as new forms arose that were better adapted to the Earth’s changing environment．/．．．when new forms arose that were better adapted to the Earth’s changing environment．
解析 一些物种消失或灭绝，是由于产生了新的物种形式，它们可以更好地适应当时不断变化的地球环境。
转载请注明原文地址:https://kaotiyun.com/show/3FKK777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)