问题 选择题

保护生物圈刻不容缓,下列叙述关系不密切的是(  )

A.人类可利用的水资源、生物、矿物是有限的

B.由于人口增长和土地的不合理利用,人类和生物的生存空间越来越小

C.地球上有限的生存环境正处在不断的恶化困境中

D.维持人类和生物的生存环境和可持续发展

答案

解;水资源,一般是淡水,但冰川、永久冻土等,也含有淡水.矿物资源,在地壳中富集的可以给人类利用的各种元素.生物资源,可以给人类利用的生物,包括动植物和微生物,可再生.但是人类可以利用的自然资源是有限的,由于人口增长和土地的不合理利用,如乱砍滥伐、过度放牧、不合理开垦(围湖造田、垦荒、湿地开发等)、环境污染使环境不在适和生物生存等,使生物的栖息环境遭到破坏,使人类和生物的生存空间越来越小.使地球上有限的生存环境正处在不断的恶化困境中.维持人类和生物的生存环境主要是保护环境,可持续发展主要是指实现自然资源的可持续的、循环的开发利用.

故选:D.

选择题
阅读理解

阅读理解。

     I believe that animals possess greater intelligence than most people think But plants? I've never considered

the possibility of plant intelligence. The idea seems absurd.

     Yet I've had friends argue that plant intelligence might exist. "What are the differences between plants and

animals?" they ask, and then they argue about certain species that seem to share the intelligence of both plants

and animals.

     New research suggests that plants communicate via "networks". Plant communication is not idea, and

cannot indicate that it is a kind of intelligence, but it is still interesting.

     Recent research from Vidi researcher Josef Stuefer at the Radboud University Nijmegen shows that plants

have their own chat systems that they can use to warn each other. Therefore plants are not boring and passive

organisms that just stand there waiting to be cut down or eaten up; many plants form internal communication

networks and are able to exchange information networks and are able to exchange information efficiently.

     Many herbal plants such as strawberries and clovers (三叶草) naturally form networks. Individual plants

remam connected with each other for a certain period of time by means of runners (plant stems that grow

along the ground and put down roots to form new plants). These connections enable the plants to share

information with each other via intemal channels. They are therefore very similar to computer networks. But

what do plants chat to each other about?

     Recently Stuefer and his colleagues were the first to prove that clover plants warn each other via the

network links if danger is nearby. If one of the plants is attacked by caterpillars (毛虫), the other members of

the network are warned via an internal signal. Once warned the intact (完好无损的) plants strengthen their

chemical and mechanical (机体的) resistance so that they are less attractive to advancing caterpillars. Thanks

to this early warning system, the plants can stay one step ahead of their attackers. The research has shown that

this significantly limits the damage to the plants.

     Again, I don't believe this reflects intelligence, but it's certainly fascinating.

1. The author thinks that the plant communication _____. [ ]

A. is absolutely a new idea 

B. is a sign of plant intelligence

C. is related to animal communication

D. is interesting and fascinating

2. Clover plants warn each other when danger is nearby by _____. [ ]

A. making sounds

B. releasing chemicals

C. strengthening mechanical resistance

D. sending internal signals

3. Which of the following statements about the research is NOT true? [ ]

A. Most plants have no chat system and are passive organisms.

B. Individual plants can also remain connected with each other.

C. The communication between clover plants can protect them from damage.

D. The research is the first to show how clover plants warn each other.

4. The author's attitude towards plant intelligence is _____. [ ]

A. unconcerned

B. doubtful

C. positive

D. hopeful

5. What's the best title for the passage? [ ]

A. Does Plant Communication Really Exist?

B. Some Discoveries About Clover Plant.

C. Does Plant Communication Imply Intelligence?

D. A New Study on Plant Communication.