Peter und Anna, wo habt ihr _____ Stühle？

Passage One． 听材料，回答下列各题：

A.Herparents thrived in the urban environment．

B.Her parents left Chicago to work on a farm．

C.Her parents immigrated to America．

D.Her parents set up an ice-cream store．

A.The man is thrilled by the flight.

B.The man enjoys the modem atmosphere.

C.The man has been to the place before.

D.The man is in need of a good rest.

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.

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请帮忙给出每个问题的正确答案和分析，谢谢！

根据以下材料，回答题

Toads Are Arthritis and in Pain

Arthritis is an illness that can cause pain and swelling in your bones. Toads， 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 relentless march across the landscape.

回答（46）题 查看材料

A.But this advantage also has a big drawback——up to 10% of the biggest toads suffer from arthritis.

B.The task now facing the country is how to remove the toads.

C.But arthritis didn"t slow down toads outside the laboratory.

D.Toads with longer legs move faster and travel longer distances while the others are being left behind.

E.Toads are not built to be road runners——they are built to sit around ponds and wet areas.

F.Furthermore， they soon take over the natural habitats of Australia"s native species.

Protecting the heart, warding off cancer, easing the pain of arthritis -- the list of Vitamin E's possible benefits keeps getting longer. Now, because of two new studies, some researchers say the nutrient is so critical for older people that everyone over 65 should consider taking a daily supplement.

The latest finding comes from nutrition and immunology respected: Vitamin E boosts the immune system in older people. In an eight-month study of 88 seniors, the scientists found that those taking at least 200 international units of Vitamin E daily had stronger immune responses than those taking little or none. Alzheimer's disease. Researchers tracked 341 moderately senile patients. Those who popped 2,000 IU of Vitamin E took seven months longer to reach an advanced stage of the disease.

Rangit Kumar Chandra, a Vitamin E researcher at Memorial University of Newfoundland, Canada, says more studies are needed to learn who can benefit most and at what dose. Vitamin E thins the blood, so high doses can cause bleeding in people who also take blood thinning drags, even aspirin. Individuals with serious conditions should consult their doctors. But most people over 65, Chandra says, can take up to 200 IU with no side effects and great benefits.

What's the main idea of the passage?

A．People will be in perfect health if they take Vitamin E every day.

B．Study showed that people who took Vitamin E regained their Flexibility.

C．Vitamin E may help prevent Alzheimer's.

D．Vitamin E offers a range of advantage if old people take proper dose of Vitamin E every day.

Arthritis that is relieved by a visit to Magnetic Hill illustrates the fact that

A．magnetism has healing properties

B．people often deceive themselves

C．arthritis is a seasonal thing

D．the mind has an effect on the body's health