题目内容

Toads are Arthritis and in Pain
Arthritis c关节炎) is an illness thatcan cause pain and swelling in your bones. Toads (蟾蜍),a big problem inthe north of Australia, are suffering from painful arthritis in their legs andbackbone, a new study has shown. The toads that jump the fastest are morelikely to be larger and to have longer legs. (46)
The large yellow toads,native to South and Central America, were introduced into the north-easternAustralian state of Queenslandin 1935 in an attempt to stop beetles and other insects from de-stroyingsugarcane crops. Now up t0 200 million of the poisonous toads exist in thecountry, and they are rapidly spreading through the state of Northern Territory at a rate of up t0 60 kma year. The toads can now be found across more than one million squarekilometers. (47) A Venezuelanpoison virus was tried tin the 1990s but had to be abandoned after it was foundto also kill native frog species.
The toads have severelyaffected ecosystems inAustralia.Animals, and sometimes pets, that eat the toads die immediately from theirpoison, and the toads themselves eat anything they can fit inside their mouth._ (48)
A co-author of the newstudy, Rick Shine, a professor at the University of Sydney,says that lit-tle attention has been given to the problems that toads face.Rick and his colleagues studied nearly 500 toads from Queenslandand the Northern Territoryand found that those in the latter state were very different. They were active,sprinting down roads and breeding quickly.
According to the results ofthe study, the fastest toads travel nearly one kilometer a night. (49) But speed and strength come at aprice-arthritis of the legs and backbone due to con-stant pressure placed onthem.
Inlaboratory 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 programmedto move~ apparently, that even when in pain the toads travelled as fast and asfar as the healthy ones, continuing their constant march across the landscape.
46
47
48
49
50
请帮忙给出每个问题的正确答案和分析，谢谢！

查看答案

搜索结果不匹配？点我反馈

更多问题

心理评估可采用心理测验这类___________方法，也可采用观察法这种方法。

Multiple Sclerosis (多发性硬化症 )
1. Multiple Sclerosis (MS) is a disease in which the patient&39;s immune (免疫的 ) systemattacks the central nervous system. This can lead to numerous physical andmental symptoms, as the disease af-fects the transmission of electrical signalsbetween the body and the brain. However, the human body,being a flexible,adaptable system, can compensate for some level of damage, so a person with MScan look and feel fine even though the disease is present.
2. MS patients can have oneof two main varieties of the disease: the relapsing form. (复发型) and the primaryprogressive form. In the relapsing form, the disease progresses in a series ofjumps; at times it is in remission (减轻) . which means that a person&39;s normal functionsreturn for a period of time before the system goes into relapse and the diseaseagain becomes more active. This is the most common form. of MS; 80～90% of people havethis form. of the disease when they are first diagnosed.The relapse-remissioncycle can continue for many years. Eventually, however, loss of physical andcognitive functions starts to take place and the remissions become lessfrequent.
3. In the primaryprogressive form. of MS, there are no remissions and a continual but steady lossof physical and cognitive functions takes place. This condition affects about10～15 % of sufferers at di-agnosis.
4. The expected course ofthe disease, or prognosis (预后), depends on many variables: the sub-type of the disease, the patient&39;sindividual characteristics and the initial symptoms. Life expectancy ofpatients, however, is often nearly the same as that of an unaffectedperson-provided that a reasona-ble standard of care is received. In some casesa near-normal life span is possible.
5. The cause of the diseaseis unclear; it seems that some people have a genetic susceptibility (易感性), which is triggeredby some unknown environmental factor. Onset (发作)of the disease usually occurs in young adultsbetween the ages of 20 and 40. It is more common in women than men; howev-er,it has also been diagnosed in young children and in elderly people.
Paragraph 1 _
Paragraph 2
Paragraph 3
Paragraph 4
MS affects the communication of nerve cells between the body and .
An MS patient can feel fine for years without being affected much by
10～15% of MS patients are diagnosed as naVlng___
Young adults might have a higher chance of developing the disease than
请帮忙给出每个问题的正确答案和分析，谢谢！

查询账簿：以王林身份登录，查询所有总账科目的科目余额表。

数学学习中形成的认真审题的态度及其方法影响到物理、化学等学科中的审题活动，可称乏为 ________。