内容正文:
题型专练:阅读理解
Passage 1
Some animals can easily find their way home after a long journey. How do they make it? 1题Scientific research shows that they are born with certain unusual abilities for direction.
2题A certain kind of ants,for example,can count their steps to avoid getting lost. They can go as far as 110 metres and bring food home. These ants live in the open desert(沙漠),so they have nothing to guide them along the way. It's like someone walking six kilometres through a dark forest.
Some fish have an unbelievable sense of smell. They can smell even a single drop of their home water in a large sea area. Some sea birds have a similar ability. They are able to make a smell map of their flying area.
Some animals can sense the earth's magnetic field(磁场),while humans can't. This magnetic field guides a certain kind of fish when they swim a long way to a place and then back. How can this kind of fish do that? 3题It is still a mystery. Scientists have no good answers yet.
However,animals with such unusual abilities still have difficulty dealing with environmental changes caused by human activities. For example,many birds depend on stars for direction,but they get lost easily at night when city lights are kept on all night. 4题To solve this problem,we can simply turn off some lights at night. Clearly,one small act of humans may mean a lot to animals.
【语篇研读】
What:介绍了不同动物辨别方向的方法。
Why:鼓励学生探索自然界中的各种奇妙现象;同时引导学生与动物和谐相处。
How:①文体特征:说明文。
②文章结构:总—分—总。第1段引出主题;第2~4段分别介绍了蚂蚁、鱼和其他动物是如何辨别方向的;第5段指出这些动物目前的困境,鼓励人们保护环境,保护动物。
1. Where is this passage most probably from?
A. A storybook. B. An art magazine. C. A guidebook. D. A science magazine.
2. How can a certain kind of ants find their way?
A. By imagining the way. B. By counting their steps.
C. By bringing food together. D. By walking through a forest.
3. What does the underlined word “mystery” in paragraph 4 probably mean?
A. Secret. B. Choice. C. Reason. D. Fe