首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Ecosystem l、 The word "ecosystem" is short for ecological(生态的)system. An ecosystem is where living creatures expand within a
Ecosystem l、 The word "ecosystem" is short for ecological(生态的)system. An ecosystem is where living creatures expand within a
admin
2014-03-28
41
问题
Ecosystem
l、 The word "ecosystem" is short for ecological(生态的)system. An ecosystem is where living creatures expand within a given area. You can say that an ecosystem is the natural environment where biological organisms(生物)such as plants, animals and humans co-exist in this world. So naturally that includes you and me. Yes, we are all members of an ecosystem!
2、 There are different kinds of ecosystems depending on the type of surface or environment. Most are naturally made such as the ocean or lake and the desert or rainforest. Some are man-made or artificial to encourage cohabitation(兴居)between living and non-living things in a monitored environment, such as a zoo or garden.
3、 Plants make up the biggest group of biological creatures within an ecosystem, and that’s because they are the natural food producers for everyone. Plants raised in the earth need air and collect sunlight to help them grow. When they grow, the plants and their fruits or flowers eventually become a source of food to animals, microorganisms(微生物)and even humans, of course. Food is then converted to energy for the rest of us to function, and this happens in a never-ending cycle until the living creatures die and break up back in the earth.
4、 Ecosystems are the basis of survival for all living things. We depend on plants and animals for food. In order for us to exist, we need to grow and care about other organisms. We also need to care for the non-living things within our environment like our air and water so we can continue living as a population. Since plants, animals and humans are all of various species(物种), we all play a role in maintaining the ecosystem.
5、 To preserve our ecosystems, we should stop using too much energy, which happens when we consume more than our share of resources. Humans should not disturb the natural habitat(栖息地)of plants and animals, and allow them to grow healthily for the cycle to continue. Too many people in a habitat can mean displacement(搬迁): imagine being thrown out of your home because there is no more space for everyone. Worse, overpopulation can also ruin the environment and cause destruction of existing plants and animals.
A. What can we do to help protect ecosystems’? B. What are different types of ecosystems’?
C. What is an ecosystem? D. What destroys ecosystems?
E. How does an ecosystem work? F. Why are ecosystems important?
Paragraph 2______.
选项
答案
B
解析
第二段讲到不同的生态系统取决于地表或环境的种类。大多数生态系统为自然形成的海洋湖泊,沙漠或热带雨林。还有动物园或花园等人造兴居地。所以第一段主要讲了生态系统有哪些不同的类型。
转载请注明原文地址:https://kaotiyun.com/show/ZUQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
Maryjusttoldusaveryfascinatingstory.
TheStoryofLaniFive-year-oldLanistilltakessevenmedicineswithherbreakfasteverymorning."She’sverygoodaboutit,
Inthe1ststudy,studentswhostayuplate______.AccordingtoDr.Pagel,theacademicperformanceofastudentwillbeaffect
Intherecentpast,medicalresearchershaveshownthatheartdiseaseisassociatedwithcertainfactorsinourday-to-daylives
Intherecentpast,medicalresearchershaveshownthatheartdiseaseisassociatedwithcertainfactorsinourday-to-daylives
Thereisafundamentaldifferencebetweenthetwoministersandtheiraims.
Manycitieshaverestrictedsmokinginpublicplaces.
Newbornbabiescan(discriminate)betweenaman’sandawoman’svoice.
A.hedidnotobservethesuncarefullyenoughB.hecouldnotseeitscurveC.thesun,themoonandthestarsseemedtomovea
Threehourslaterheconfessedthathehadbeeninvolvedintheattack.
随机试题
跨国公司的经营与传统纯粹国内公司的经营相比,有哪些特点?
《左传》晋侯、秦伯围郑,以其无礼于晋,且贰于楚也。晋军函陵,秦军汜南。佚之狐言于郑伯曰:“国危矣,若使烛之武见秦君,师必退。”公从之。辞曰:“臣之壮也,犹不如人;今老矣,无能为也已。”公曰:“吾不能早用子,今急而求子,是寡人之过也。然郑
头项强痛伴恶寒发热者多为头痛如裹伴昏胀沉重者多为
甲状腺术后最危急的并发症是()。
某城市路线标准深度为8m,划分为三个等分,从街道方向算起,各等分单独深度价格修正率分别为50%、30%、20%。则临街12m的矩形土地的平均深度价格修正率为120%。()
下列物质中,两个氢原子的化学性质不同的是()。
下列关于看涨期权和看跌期权的说法,正确的是()。
财务效益状况修正指标中,()是指物业服务企业一定时期的主营业务利润同主营业务收入净额的比率。
(96年)设f(x)有连续导数,f(0)=0,f’(0)≠0,F(x)=∫0x(x2一t2)f(t)dt,且当x→0时,F’(x)与xk是同阶无穷小,则k等于
A、面包B、蛋糕C、米饭A
最新回复
(
0
)