问题 解答题

据报道:全球有四个沙尘暴中心:澳大利亚、北美、非洲和亚洲中部,我国是沙尘暴频发地区,来自黄土高原和内蒙古地区的沙尘暴,多次袭击西北地区,2002年4月8日,我国北方地区再次遭遇强沙暴和浮尘天气,强烈的浮土也是传染疾病的罪魁祸首之一,请据此回答:

(1)沙尘暴带来的病毒和病菌属于______;

(2)我国在西部大开发战略中,实施“南水北调”工程,从生态因素分析,目的是改善西部地区生态环境中的______因素;

(3)为搞好西部环境的保护和建设,我国实行“退耕还林,退耕还草”,强调树种和草种的多样性,目的是增强生态系统的______.

答案

(1)、病原体是指引起传染病的细菌、真菌、病毒和寄生虫等生物.沙尘暴带来的病毒和病菌是传染疾病的罪魁祸首,从传染病的角度来说,它属于病原体.

(2)、影响生物生活的各种因素包括非生物因素和生物因素.非生物因素包括光、温度、水、空气、土壤等.生物因素是指环境中影响某种生物个体生活的其他所有生物,包括同种和不同种的生物个体,生物与生物之间的关系常见有:捕食关系、竞争关系、合作关系、寄生关系等.

(3)、生态系统具有一定的自动调节能力,但是由一定限度的,在一个生态系统中,生物的数量和种类越多,生态系统的自我调节能力就越强,相反,自动调节能力越差.“退耕还林,退耕还草”,强调树种和草种的多样性,目的是增强生态系统的生物的种类和数量,增加生态系统的自动调节能力.实施“南水北调”工程,从生态因素分析,目的是改善西部地区生态环境中的非生物因素,主要是水这个因素.

故答案为:(1)病原体

(2)非生物

(3)自动调节能力

阅读理解

阅读理解。

     The more women and minorities make their way into the ranks of management, the more

they seem to want to talk about things formerly judged to be best left unsaid.

     Consider the novel views on the subject of getting ahead.Coleman is black.He spent 11

years with IBM, half of them working in management development, and now serves as a

consultant to the likes of AT & T, Coca Cola.Coleman says that based on what he's seen at

big companies, he weighs the different elements that make for long term career success as

follows: performance counts a mere 10%; image,30%; and exposure, a full 60%.Coleman

concludes that excellent job performance is so common these days that while doing your work

well may win you pay increases, it won't secure you the big promotion.He finds that advancement

more often depends on how many people know you and your work, and how high up they are.

     Ridiculous beliefs? Not to many people, especially many women and members of minority races

who, like Coleman, feel that the scales have dropped from their eyes."Women and blacks in

organizations work under false beliefs," says Kaleen Jamison, a New York based management

consultant who helps corporations deal with these issues."They think that if you work hard, you'll get

ahead and someone in authority will reach down and give you a promotion." She added, "Most women

and blacks are so frightened that people will think they've gotten ahead because of their sex or color

that they play down their visibility." Her advice to those folks: learn the ways that white males have

traditionally used to find their way into the spotlight.

1.The best title for this passage would be________.

A.The Importance of Being Visible

B.Roles of Women and Minorities in Management

C.Job Performance and Advancement

D.Sex and Career Success

2.To achieve success in your career,the most important factor, according to the passage, is to_______.

A.work as a consultant to your superiors

B.project a favorable image to the people around you

C.let your superiors know how good you are

D.perform well your tasks given by your superiors

3.The reason why women and blacks play down their visibility is that they________.

A.know that someone in authority will reach down and give them a promotion

B.don't want people to think that their promotions are due to sex or color

C.don't want to give people the impression that they work under false beliefs

D.believe they can get promoted by reason of their sex or color

4.In the author's opinion, Coleman's beliefs are________.

A.biased  

B.popular

C.superficial  

D.insightful

选择题