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
19
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
经过测定,某制衣厂工人的劳动强度指数28,按照我国体力劳动强度分级标准,该工人的
一般来说,( )适应消费者愿意购买低价位出版物的心理。 A、尾数定价策略?
一般来讲,当企业增加债务资金的数额时,企业的加权平均资金成本()。
保证财务报告可靠的关键是()。
社会工作者小王正在开展一个震后伤残学生家长减压互助小组, 督导要求她对小组过程
根据喷头的常开、常闭形式,自动喷水灭火系统可分为闭式系统和开式系统。闭式系统有(
图2—1显示了某地多家企业行政人员、专业人员、管理人员和保洁人员的招聘信息发布渠道使用情况: (1)简要分析图表中所提到的三种招聘信息发布渠道以及其...
公开发行证券的公司应当在每个会计年度上半年结束之日起()个月内编制半年度报告,并在该期限内将报告全文刊登于中国证监会指定的互联网网站,将半年度...
某变电所由系统供给电源,简化接线如图5-4所示。变压器参数:容量120MVA,Sj=100MVA;Uxl-2=13.3%。Ux1-3=12%,Ux2...
招标人以招标公告的方式邀请不特定的法人或其他组织投标的招标方式是()。A.自行组织招标B.委托招标代理机构代理招标C.公开招标D.邀请招标