首页
登录
职称英语
[originaltext]Almost one-fifth of Europe’s wood beetles are at risk of extincti
[originaltext]Almost one-fifth of Europe’s wood beetles are at risk of extincti
游客
2023-06-20
17
管理
问题
Almost one-fifth of Europe’s wood beetles are at risk of extinction due to a widespread decline in ancient trees, according to a new report which suggests their death could have disastrous impact on other species. Wood beetles are a key food source for small mammals, bats and birds. Some species are also pollinators. Healthy and varied wood beetle populations need large volumes of dead and decaying wood. Some species will only lay their eggs in hollow holes containing mould that takes hundreds of years to form Logging and tree loss is “by far” the greatest threat to their way of life, the IUCN report says. But they also face an astonishing number of threats, from urbanization and tourism to arable farming, pollution and climate change. Dr. Keith Alexander, an ecological consultant who contributed to the report, said: “Wood beetles are intimately tied to everything else in the places where they occur. If you start to erode the varieties of life, then the ecosystem heads towards collapse.”
Questions 3 and 4 are based on the news report you have just heard.
3. How many wood beetles in Europe are at risk of extinction?
4. What is the greatest threat to wood beetles by far?
选项
A、Nearly one-fifth of them.
B、Nearly two-thirds of them.
C、Nearly half of them.
D、Nearly all of them.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2765998.html
相关试题推荐
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]Forthreegroupsofexplorersformedbycollegestudentsand
[originaltext]Forthreegroupsofexplorersformedbycollegestudentsand
[originaltext]A"blogger"isapersonwhowritesonanInternetcomputerwe
[originaltext]A"blogger"isapersonwhowritesonanInternetcomputerwe
[originaltext]A"blogger"isapersonwhowritesonanInternetcomputerwe
[originaltext]Jetlag,causedbytravelingbetweentimezones,isbecoming
随机试题
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
桥梁静载试验中,某挠度测点的初始值为0.02mm,试验控制荷载作用下的加载测值为
某公路工程合同总价为12000万元,开工预付款为合同总价的20%。表1是承包人每
使用一次性注射器时,首先要检查A.注射器和针头是否能衔接紧密 B.针头是否锐利
下列选项不属于基金招募说明书主要披露事项的是( )。A.基金的投资目标 B.
()水平决定教育的规模和速度。 A.政治经济制度B.科学技术 C.生产力
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
关于商品经济和市场经济的说法正确的是()。A.市场经济是发达的商品经济 B.市
天馈线系统测试时,如驻波比太高,直接影响基站的()。A.语音质量 B.系
最新回复
(
0
)