Adaptation of Living Things
Certain animals and plants develop characteristics that help them cope with their environment better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter, in providing protection, and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments.
Each living thing is adapted to its way of life in a general way, but each is adapted especially to its own distinct class. A plant, for example, depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals. It depends upon its green leaves for using the suns energy to make food from inorganic chemicals. These are general adaptations, common to most plants. In addition, there are special adaptations that only certain kinds of plants have.
Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape, and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near. Organisms have a great variety of ways of adapting. They may adapt in their structure, function, and genetics; in their development and production of the young; and in other respects. An organism may create its own environment, as do warm-blooded mammals, which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage, but sometimes an organism is so well adapted to a particular environment that if conditions change, it finds it difficult or impossible to readapt to the new conditions.
1. Some plants and animals develop superior characteristics so that they may
A) help others of their kind get food, shelter and other things needed.
B) survive even in extremely severe conditions.
C) become better adapted to the environments than others of their kind.
D) result in the evolution and production of more intelligent organisms.
2. In the first paragraph, the word environments could best be replaced by
A) contexts.
B) surroundings.
C) neighbors.
D) Enemies.
3. It can be inferred from this passage that the feathers of a bird are colored
A) to frighten its enemies.
B) to attract its enemies.
C) to adjust its body heat.
D) to match its environment
4. Which of the following is not directly mentioned in the passage?
A) A living thing way adapt in its structure.
B) An organism may adapt in its function.
C) A living creature may adapt in its genetic makeup.
D) A living organism may adapt in its sleeping habit.
5. The author cites the behavior of warm-blooded mammals in order to that a living thing may have the ability
A) to create an environment of its own.
B) to remain still when an enemy is near.
C) to make food from inorganic chemicals.
D) to change the color of its skin.
答案: CBDDA
雅思流程图高分范文:玻璃再生
雅思写作语法知识:名词做定语
雅思写作8分范文:广告与媒体问题
雅思写作思路指导:演讲还要存在吗?
雅思写作思路指导:重视职业学术科目
提升雅思写作水平的四个细节
雅思写作范文:学校该教什么?
挑战雅思高分作文的四项原则
雅思写作思路指导:电视学习
雅思写作思路指导:老师会长期存在么?
雅思写作经典范文:人生的烦恼
雅思写作范文首段点评+修改
如何在雅思写作中展示自己的英语水平
雅思写作8分范文:计算机的利与弊
雅思写作实用背诵素材(1)
雅思写作必背的20个万能句型
雅思写作考官评判作文字数的标准
深度剖析雅思写作评分标准
雅思写作实用背诵素材(3)
雅思写作常见的chinglish表达
雅思五种小作文的写作技巧
雅思写作范文:广告的利弊
雅思写作真题范文:电视媒体
雅思写作必备词组整理
雅思写作稳拿7分的七个关键点
雅思写作备考的四条建议
雅思写作范文:媒体应报道犯罪细节
雅思写作范文:Happiness
雅思写作范文:保护传统建筑
G类雅思书信写作范文:建议信(7)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |