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
In his 1979 book, The Sinking Ark, biologist Norman Myers estimated that (1)_____ of more than 100 human-caused extinctions occu
In his 1979 book, The Sinking Ark, biologist Norman Myers estimated that (1)_____ of more than 100 human-caused extinctions occu
admin
2010-05-05
39
问题
In his 1979 book, The Sinking Ark, biologist Norman Myers estimated that (1)_____ of more than 100 human-caused extinctions occur each day, and that one million species (2)_____ by the century’s end. Yet there is little evidence of (3)_____ that number of extinctions. For example, only seven species on the (4)_____ species list have become extinct (5)_____ the list was created in 1973.
Bio (6)_____ is an important value, according to many scientists. Nevertheless, the supposed mass extinction rates bandied about are (7)_____ by multiplying (8)_____ by improbables to get imponderables.
Many estimates, for instance, rely a great deal on a "species-area (9)_____", which predicts that twice as many species will be found on 100 square miles (10)_____ on ten square miles. The problem is that species am not distributed (11)_____, so how much of a forest am destroyed may be as important as (12)_____.
(13)_____, says Ariel Lugo, director of the International Institute of Tropical Forestry in Puerto Rico, "Biologists who predict high (14)_____ rates (15)_____ the resiliency of nature".
One of the main muses of extinctions is deforestation. According to the Consultative Group on International Agricultural Research, what destroys tropical trees is not commercial logging, (16)_____ "poor farmers who have no other (17)_____ for feeding their families than slashing and burning a (18)_____ of forest".
In countries that practice modern (19)_____ agriculture, forests are in (20)_____ danger. In 1920, U.S. forests covered 732 million acres. Today they cover 737 million.
选项
A、extinction
B、extinctive
C、extinct
D、extinguished
答案
A
解析
extinction。"灭绝率"英文要用extinction rates,不能用extinct。类似用法:建设银行Construction Bank;说明书instruction book。extinctive使消灭的;extinguished熄灭的。
转载请注明原文地址:https://jikaoti.com/ti/wBRRFFFM
0
考研英语一
相关试题推荐
AstudypublishedinTheNewEnglandJournalofMedicineestimatedthatthereareanaverageof30in-flightmedicalemergencies
Itisestimatedthat______ofUSworkforceismadeupofundocumentedimmigrants.TheexampleoftheyoungmaninWashingtonD
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
随机试题
关于乙酰CoA去路的描述中错误的是()。
[*]
A.CEA升高B.AFP升高C.碱性磷酸酶升高D.酸性磷酸酶升高E.胚胎硫糖蛋白抗原升高骨肉瘤的肿瘤标记物是
如果机体在一段时间内避免做外功,且体重不变,其消耗的能量最终都变成了
急性肾衰竭的临床特点是
A.阴虚B.阳虚C.阴胜D.阳胜E.阴阳两虚
一宗房地产通常与其周围其他房地产构成某一特定地区,而该地区并非固定不变,尤其是社会经济位置经常在变化。所以,房地产价格是在考虑该房地产过去如何使用,预计将来可以做何种使用,总结这些考虑结果后才能形成房地产的()。
背景某施工总承包单位承担一项建筑基坑工程的施工,基坑开挖深度12m,基坑南侧距基坑边6m处有一栋6层住宅楼。基坑土质状况从地面向下依次为:①杂填土0~2m;②粉质土2~5m;③砂质土5~10m;④黏土10~12m。上层滞水水位在地表以下
在现实生活中,因为好大喜功、贪大求洋导致的浪费与失误屡见不鲜,因为急于求成、急功近利导致拔苗助长、不计后果的例子也不胜枚举。这是因为“大干快上”并没有随着科学发展观的提出与确立而自行消失,有的地方、有的干部仍然把“发展是硬道理”误解为“经济增长是硬道理”,
为了使命令按钮的Picture、DownPicture或DisabledPicture属性生效,必须把它的Style属性设置为
最新回复
(
0
)