首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Toads are Arthritic and In Pain Arthritis (关节炎)is an illness that can cause...
Toads are Arthritic and In Pain Arthritis (关节炎)is an illness that can cause...
admin
2020-12-24
45
问题
Toads are Arthritic and In Pain
Arthritis (关节炎)is an illness that can cause pain and swelling in your bones. Toads (蟾蜍), a big problem in the north of Australia, are suffering from painful arthritis in their legs and backbone, a new study has shown. The toads that jump the fastest are more likely to be larger and to have longer legs. ______ (46)
The large yellow toads, native to South and Central America, were introduced into the north-eastern Australian state of Queensland in 1935 in an attempt to stop beetles and other insects from destroying sugarcane crops. Now up to 200 million of the poisonous toads exist in the country, and they are rapidly spreading through the state of Northern Territory at a rate of up to 60 km a year. The toads can now be found across more than one million square kilometers. _____________ (47) A Venezuelan poison virus was tried in the 1990s but had to be abandoned after it was found to also kill native frog species.
The toads have severely affected ecosystems in Australia. Animals, and sometimes pets, that eat the toads die immediately from their poison, and the toads themselves eat anything they can fit inside their mouth. ___________ (48)
A co-author of the new study, Rick Shine, a professor at the University of Sydney, says that little attention has been given to the problems that toads face. Rick and his colleagues studied nearly 500 toads from Queensland and the Northern Territory and found that those in the latter state were very different. They were active, sprinting down roads and breeding quickly.
According to the results of the study, the fastest toads travel nearly one kilometer a night. _____________ (49) But speed and strength come at a price-arthritis of the legs and backbone due to constant pressure placed on them.
In laboratory tests, the researchers found that after about 15 minutes of hopping, arthritic toads would travel less distance with each hop (跳跃) (50) These toads are so programmed to move, apparently, that even when in pain the toads travelled as fast and as far as the healthy ones, continuing their constant march across the landscape.
(47)
选项
A Furthermore, they soon take over the natural habitats of Australia’s native species.
B Toads are not built to be road runners — they are built to sit around ponds and wet areas.
C But this advantage also has a big drawback — up to 10% of the biggest toads suffer froma rthritis.
D But arthritis didn’t slow down toads outside the laboratory, the researchers found.
E The task now facing the country is how to remove the toads.
F Toads with longer legs move faster and travel longer distances, while the others are being left behind.
答案
E
解析
前文讲述澳大利亚的蟾蜍过多影响了生态平衡,后面讲的是人们尝试消灭蟾蜍但失败了,因此填入的句子应该是关于消灭蟾蜍的。
转载请注明原文地址:https://ti.zuoweng.com/ti/dupQKKKQ
相关试题推荐
ToadsareArthriticandInPain Arthritis(关节炎)isanillnessthatcancause...
ToadsareArthriticandInPain Arthritis(关节炎)isanillnessthatcancause...
Attitudestomentalillnesshaveshiftedinrecentyears.A.displayedB.shownC
Wearesurethathewillgetoverhisillness.A:certain B:aware C:happy D:det
Attitudestomentalillnesshaveshiftedinrecentyears.A:displayed B:shownC:
Attitudestomentalillnesshaveshiftedinrecentyears.A:displayed B:shown.C
Wearesurethathewillgetoverhisillness.A:certain B:aware C:happy D:det
ToadsareArthriticandInPain Arthritis(关节炎)isanillnessthatcancause...
Attitudestomentalillnesshaveshiftedinrecentyears.A.displayedB.shownC
Onlyhisrelativesknewhehadafatalillness.A:strangeB:deadlyC:seriousD:un
随机试题
下图所反映的历史事件是:
记忆过程包括()。
化合物的正确名称是()。
下列属于提高物流成本管理水平措施的有()。
根据下列饼图,该地区高校在读大学生文科学生比工科学生少()。
在讲话程度上,最常见的阻抗的表现形式是()。 (A)寡言(B)沉默
患者男性,21岁。在某施工工地干活时不慎绊倒,造成右颊部贯通伤,出血较多。如果缺损为全层洞穿型,应采取的措施是()A.将创缘的口腔粘膜与皮肤相对缝
分析地基的长期稳定性一般采用下列哪种参数? A.固结排水试验确定的总应力参数 B.固结不排水试验确定的总应力参数 C.不固结排水试验确定的有效应力参...
有关合同转让的说法,正确的是( )A.合同权利转让属于合同双方主体和内容的协议变更B.所有的合同权利都可以转让C.合同权利人转让权利一般不须经合同义务人同
男性,41岁,2小时前突然出现剧烈头痛,伴呕吐,四肢活动好,体温正常,克氏征阳性A脑血栓形成B脑出血C蛛网膜下腔出血D脑栓塞E脑膜炎