2. 外语
  3. Most animals have little connection with animals of a different kind, unless they hunt them for food. Sometimes, however, two ki

Most animals have little connection with animals of a different kind, unless they hunt them for food. Sometimes, however, two ki

admin2008-12-15  100
问题     Most animals have little connection with animals of a different kind, unless they hunt them for food. Sometimes, however, two kinds of animals come together in a partnership (伙伴关系) which is good for both of them. You may have noticed some birds sitting on the backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄生虫)on sheep. The sheep allow the birds to do so because they remove the cause of discomfort. So although they can manage without each other, they do better together.
    Sometimes an animal has a plant partner. The relationship develops until the two partners cannot manage without each other. This is so in the corals (珊瑚)of the sea. In their skins they have tiny plants which act as" dustmen", taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from receiving light so that they cannot live normally ,the corals will die.
选项 A、they can eat its parasites
B、they enjoy traveling with the sheep
C、they depend on the sheep for existence
D、they find the position most comfortable
答案A
解析 细节题。根据文章第一段第四行可知“…but because they find easy food in the parasites(寄生虫)on sheep．”所以[A]正确。
转载请注明原文地址:https://kaotiyun.com/show/90Nd777K
本试题收录于： 公共英语二级笔试题库公共英语（PETS）分类
0

公共英语二级笔试

公共英语（PETS）

相关试题推荐
随机试题
最新回复(0)