问题 选择题

土壤动物能够促进农田生态系统物质循环并改良土壤结构,其类群组成和数量是评价农田生态环境的重要指标。下表是某农田使用两种肥料后4类土壤动物物种数和密度(个/m3)调查数据。根据表中数据可以得到的正确结论是

[ ]

A.化肥田土壤动物的物种多样性减少,营养结构简单

B.有机肥田的土壤动物数量大大增加,有机质减少

C.化肥田土壤动物个体总体减少,但是生物多样性提高

D.有机肥田的各类土壤动物密度总是大于化肥田

答案

答案:A

阅读理解

Our planet is in trouble.Polluting industries and corporations are destroying our planet, resulting in increasing global temperatures, melting ice caps, and economic turmoil(混乱).All across the country, folks are waking up to the reality that if they do not ad now to solve the environmental problems of today, the consequences are unthinkable.If we don’t i ct now, who will? Fortunately, an amazing team of young leaders are taking action.They a e getting involved with the Greenpeace Student Network!

The Student Network has student leaders who deal with the most pressing environmental issues.We have organized and won inspiring campaigns.Convincing corporations to change their ways and politicians to do the right thing.All thanks to our team of leaders, known as Campus Coordinators.

Campus Coordinators are located all across the United States, and even Canada! They work on Greenpeace Student Network campaigns at their schools and in their communities.They organize events like film screenings and days of action.They hold meetings with elected officials, work with the media, recruit(招募) volunteers, and mobilize(动员) their campus to take action! They do all of this with excellent training and expert support from our team of Student: Network staff.Campus Coordinators develop their leadership skins and become an unstoppable force for green solutions on pus and in their community.

Currently, the Greenpeace Student Network is campaigning to solve the largest environmental threat to humankind: global warming.With only months until a new international treaty(协议)on global warming is decided this December, the time to stand up and take the lead has never been

more important,

If you are concerned with environmental issues, want to mobilize your scho4l and community, nd are ready to become a skilled organizer and strong leader, then the Campus Coordinator position is for you! We are now accepting applications for the Fall 2009-Spring 2010 academic year.

Are you ready to be a leader on your campus?

Apply to be a Campus Coordinator today!        

小题1:Why does the author write the passage?                        

A.To describe the serious environmental problems.

B.To call on students to apply to be Campus Coordinators,

C.To explain the advantage of the Greenpeace Student Network..

D.To stress the importance of solving environmental problems.小题2:We can learn from the passage that the Greenpeace Student Network _____.

A.is a place where school leaders are framed

B.is a worldwide organization helping student leaders

C.helps solve corporations’ economic problems

D.helps deal with global warming at present小题3:If you are a Campus Coordinator, you may probably _____.

A.have.the chance to play a role in a film

B.find a job at a TV station

C.develop your leadership skills

D.build up your strength.小题4:Which of the following is NOT mentioned in the passage?

A.The duty of Campus Coordinators.

B.The distribution of Campus Coordinators.

C.The aim of the Greenpeace Student Network.

D.The history of the Greenpeace Student Network.

单项选择题