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
考研
The role of governments in environmental management is difficult but inescapable. Sometimes, the state tries to manage the resou
The role of governments in environmental management is difficult but inescapable. Sometimes, the state tries to manage the resou
admin
2009-05-21
91
问题
The role of governments in environmental management is difficult but inescapable. Sometimes, the state tries to manage the resources it owns, and does so badly. Often, (21) , governments act in an even more harmful way. They actually subsidize the exploitation and (22) of natural resources. A whole (23) of policies, from farm-price support to protection for coal-mining, do environmental damage and (often) (24) no economic sense. Scrapping them offers a two-fold (25) : a cleaner environment and a more efficient economy. Growth and environmentalism can actually go hand in hand, if politicians have the courage to (26) the vested interest that subsidies create.
No activity affects more of the earth’s surface than farming. It shapes a third of the planet’s land area, not (27) Antarctica, and the proportion is rising. World food output per head has risen by 4 per cent between the 1970s and 1980s mainly as a result of increases in (28) from land already in (29) , but also because more land has been brought under the plough. Higher yields have been achieved by increased irrigation, better crop breeding, and a (30) in the use of pesticides and chemical fertilizers in the 1970s and 1980s.
All these activities may have (31) environmental impacts. For example, land clearing for agriculture is the largest single (32) of deforestation; chemical fertilizers and pesticides may (33) water supplies; more intensive farming and the abandonment of fallow periods (34) exacerbate soil erosion; and the spread of monoculture and use of high-yielding varieties of crops have been accompanied by the (35) of old varieties of food plants which (36) some insurance against pests or diseases in future. Soil erosion threatens the productivity of land in both rich and poor countries. The United States, (37) the most careful measurements have been done, discovered in 1982 that about one-fifth of its farmland was losing topsoil at a rate (38) to diminish the soil’s productivity. The country subsequently (39) a program to convert 11 percent of its cropped land to meadow or forest. Topsoil in India and China is (40) much faster than in America.
选项
A、must have been provided
B、might have provided
C、must have provided
D、might have been provided
答案
B
解析
本题测试语法。must have been provided表示一种肯定推测;might have provided表示一种可能的猜测;must have provided表示一种肯定推测;might have been provided表示一种可能的猜测。根据后面的some insurance against pests or diseases in future可知,本句话表示一种可能性,并且应该用主动语态,所以应该选B。
转载请注明原文地址:https://kaotiyun.com/show/OJsa777K
本试题收录于:
MBA联考(英语)题库专业硕士分类
0
MBA联考(英语)
专业硕士
相关试题推荐
Canada’spremiers(theleadersofprovincialgovernments),iftheyhaveanybreathleftaftercomplainingaboutOttawaattheir
Peopleinbusinesscanuseforesighttoidentifynewproductsandservices,aswellasmarketsforthoseproductsandservices.
"Theword’protection’isnolongertaboo(禁忌语)"Thisshortsentence,utteredbyFrenchPresidentNicolasSarkozylatelastmont
Voiceswere______astheargumentbetweenthetwomotoristsbecamemorebad-tempered.
Wesometimeshearthatessaysareanold-fashionedform,thatso-and-soisthe"lastessayist",butthefactsofthemarketplace
Accordingtothepassage,theconceptofownershipprobably______.Theauthorthinksprivateownershiptobe______.
Unfairworkingstatusofwomenalsoproducesnegativeeffectsonmeninthat______.Itcanbeinferredfromthelastparagraph
Psychologistshavedoneextensivestudiesonhowwellpatients______withdoctors’orders.
随机试题
赔偿请求人请求行政赔偿的,不可以通过()的途径提出。
(2005年)受扭实心等直圆轴,当直径增大一倍时,其最大剪应力τ2max和两端相对扭转角ψ2与原来的τ1max和ψ1的比值为()。
丰、平、枯水期特征明显的水域,应()进行水质评价。
下列选项中,不属于全国人大常委会职权的是()。
俗话说。“没有规矩。不成方圆”;但又有人说要创新就不能守规矩。请问你怎么看?
PresidentArlinghasputhislongawaitedeconomicrestructuringprogrambeforetheCongress.Itprovidesacoordinatedprogram
中继器用于网络互联,其目的是______。
Eversincehumanshavelivedontheearth,theyhavemadeuseofvariousformsofcommunication.Generally,thisexpressionoft
There’snodoubtthatanyproposalwhichJackbedismissedmustberesisted.
Aschoolisbeingaskedtoapologizetothefamilyofaboyitprosecutedfortruancy.Theboywas【C1】______ashaving"schoolp
最新回复
(
0
)