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
Thomas Malthus published his Essay on the Principle of Population almost 200 years ago. Ever since then, forecasters have being
Thomas Malthus published his Essay on the Principle of Population almost 200 years ago. Ever since then, forecasters have being
admin
2014-03-03
527
问题
Thomas Malthus published his Essay on the Principle of Population
almost 200 years ago. Ever since then, forecasters have being warning 【M1】 ______
that worldwide famine was just around the next comer. The fast-growing
population’s demand for food, they warned, would soon exceed their 【M2】 ______
supply, leading to widespread food shortages and starvation.
But in reality, the world’s total grain harvest has risen steadily over the
years. Except for relative isolated trouble spots like present-day Somalia, 【M3】 ______
and occasional years of good harvests, the world’s food crisis has remained 【M4】 ______
just around the comer. Most experts believe this can continue even as ff 【M5】 ______
the population doubles by the mid-21st century, although feeding l0 billion
people will not be easy for politics, economic and environmental reasons. 【M6】 ______
Optimists point to concrete examples of continued improvements in yield.
In Africa, by instance, improved seeds, more fertilizers and advanced 【M7】 ______
growing practices have more than double com and wheat yields in an 【M8】 ______
experiment. Elsewhere, rice experts in the Philippines are producing
a plant with few stems and more seeds. There is no guarantee that plant 【M9】 ______
breeders can continue to develop new, higher-yielding crop, but most 【M10】______
researchers see their success to date as reason for hope.
【M1】
选项
答案
将being改为been。
解析
“have been+现在分词”为现在完成进行时,例如:I have been puzzling my brains about this question for weeks now.对这个问题我已经苦苦思索了几个星期。As we have been practicing regularly,we are certain of winning the game this time.我们一直在练习,这次有把握一定能取胜。
转载请注明原文地址:https://kaotiyun.com/show/ddZO777K
0
专业英语八级
相关试题推荐
Mummiescaptureourimaginationsandourhearts.Fullofsecretsandmagic,theywereoncepeoplewholivedandloved,justasw
WheredoestheEnglishPrimeMinisterlive?
Bytheyear2100,globaltemperaturesareanticipatedtorisebybetween0.8and3.5degreeCelsius.Thatmaynotseemlikemuch
Generally,theRenaissancereferstotheperiodbetween______and______centuries.
AppropriacyinEnglishI.Whatisappropriacy?A.Factorsdecidingappropriacy:1.choiceofwords2.thewayyousaythewords
______isknownasthetornadocapitaloftheworld.
WhichofthefollowingisNOTaCooperativeprinciple?
AdamSmith,theScottishprofessorofmoralphilosophy,wasthrilledbyhisrecognitionoforderintheeconomicsystem.Hisbo
______isthecapitalofCanada.
______istheprmarymediumoflanguage.
随机试题
A.桡神经B.腋神经C.尺神经D.肌皮神经E.正中神经肩关节脱位的患者有可能损伤
《巴黎公约》对商标申请的优先权期限是()。
承担安全评价、认证、检测、检验工作的机构,出具虚假证明,构成犯罪的,依照刑法有关规定追究刑事责任;尚不够刑事处罚的,没收违法所得,违法所得在5000元以上的,并处违法所得()。
A.子宫颈癌B.大肠癌C.肝细胞癌D.膀胱癌黄曲霉毒素B1主要诱发
下列症状对胃痛和胁痛的鉴别诊断最具有价值的为
A、丹桂香颗粒B、香砂养胃丸C、六味安消胶囊D、气滞胃痛颗粒E、养胃舒颗粒有健脾和胃,导滞消积,行气止痛功能的是()。
我国《计量法》规定,计量检定必须执行计量检定规程。计量检定规程包括()。[2006年真题]
下列关于我国爱国统一战线的表述,不正确的是()。(2013年单选18)
设y=f(x)由cos(xy)+lny—x=1确定,则=().
Mailbox-watchinginsupposedtosubsideforhigh-schoolseniorsaftertheyreceivetheiracceptancelettersandmaketheircolle
最新回复
(
0
)