systems.

　　C．After the boxfish，many other ideas of new products are borrowed from nature.

　　D．Nature is a good source to turn to for improving technology.

　　答案　D

　　解析　推理判断题。文章通过举例表明：大自然是我们提高技术的根源。

　　2．The clumsy-looking boxfish interested the scientists because of the following reasons EXCEPT that ________．

　　A．it swims using little energy

　　B．being boxy，it looks quite like a car

　　C．some engineers had researched on how to swim easily in the water

　　D．it is a speedy swimmer

　　答案　C

　　解析　细节理解题。根据第三段内容可知C是文章中没有提到的内容。

　　3．Why did top engineers in Germany go to the natural history museum?

　　A．They wanted to pay a visit to the animals there because they were so lovely.

　　B．They wanted to carry out a research of boxfish and dolphins.

　　C．They wanted to search for a model to base on for building a more－efficient car.

　　D．They wanted to study the science of survival.

　　答案　C

　　解析　细节理解题。根据第一段When top engineers in Germany wanted to build a more energy－efficient car, they headed to the natural history museum可知C正确。

　　4．We can infer from the passage EXCEPT ________．

　　A．it is believed that the creation of the airplane might have originated from the bird flying in the sky

　　B．the atmosphere on the earth cannot be transferred into the original idea

　　C．dolphins and sharks may become the source of scientists' inventions or creations

　　D．if you observe and explore nature，you may make great discoveries or become great inventors

　　答案　B

　　解析　细节理解题。根据全文可知B是文章中没有涉及的内容。

　　B

Language learning begins with listening. Children are greatly different in the amount of listening they do before they start speaking，and later starters are often long listeners. Most children will "obey" spoken instructions some time before they can