题目内容

The koala, one of Australia’s most treasured creatures, is in trouble.

    Affected by habitat (栖居地) loss and climate change, like many other uniquely Australian animals, koalas are being squeezed into smaller regions. But at present, it is a deadly disease, a somewhat silent killer that causes a further decline in the koala population, that is worrying many scientists about the fate of the koala.

    The killer is Chlamydia, which has caused symptoms in up to 50 percent of the wild koalas, with probably even more infected (感染) but not showing symptoms. It has been particularly severe in Queensland, where nearly all koalas are infected. The disease causes many symptoms including eye infections, which can lead to blindness, making it difficult for them to find their primary food.

    Treating Chlamydia in wild koalas is a challenge. There is no treatment available for it. Only a small percentage of the animals can be treated successfully and returned to the wild. Besides, there is no national plan in Australia to save the koala; it is up to each region to make management plans for its koala population.

    The good news is that researchers are working to test a vaccine (疫苗) that would help prevent further spread. If all goes well, plans can be carried out to distribute the vaccine more widely. But it’s impossible to vaccinate (给注射疫苗)  all wild koalas.

Another possibility would be to make vaccine distribution a routine part of treatment for the thousands of koalas brought into care centers every year after they are injured by cars or dogs.

While it is a combination of problems that are affecting the wild koala population, many experts believe this vaccine would be an important step in helping koalas survive longer. It may be enough time to give researchers a chance to solve some of the other problems facing Austalia’s koalas.

1.Which isn’t considered the main cause of koala’s population decline?

A. A deadly disease.       

B. Injuries from cars and dogs.

C. Climate change.         

D. Habitat loss.

2.The third paragraph mainly tells us          .

    A. the serious result Chlamydia has caused to the koala

    B. Chlamydia affected the koala only in particular regions

    C. the most serious symptom of Chlamydia is eye infections

    D. Chlamydia can seriously affect koala’s primary food

3.We can learn from the text that the vaccine       .

    A. would cure the killer Chlamydia quite effectively

    B. would only be distributed in koala care centers

    C. has already been put into practical use in Australia

    D. cannot be distributed to all the infected koalas

4.It can be inferred from the text that         .

    A. a national plan for saving koalas will be made soon in Australia

    B. koala population is declining only in a few regions

    C. researchers need enough time to solve the koala problems

D. experts have lost the best chance to save the infected koalas

 

【答案】

 

1.B

2.A

3.D

4.C

【解析】文章讲述的正是考拉所面临的严重问题，栖息地和气候变化，尤其是一种特殊的疾病对考拉的影响。

1.B 细节题。根据第二段Affected by habitat (栖居地) loss and climate change,以及第三段The killer is Chlamydia可知ACD是主要原因，而B则不是。

2.A 段落大意题。这一段讲述的正是这种病对于考拉的允许及其结果。

3.D 细节题。根据倒数第三段最后一句But it’s impossible to vaccinate (给注射疫苗)  all wild koalas.可知D正确。

4.C 推理题。根据文章最后一句It may be enough time to give researchers a chance to solve some of the other problems facing Austalia’s koalas.可知C正确。

 

练习册系列答案
相关题目

The Koala is ____ tree-climbing animal which lives in ____ Australia.

A. a, the     B. the, the       C. 不填，不填        D. a, 不填

The koala(考拉) is possibly one of the best known Australian animals, and is found in four states: Queensland, New South Wales, Victoria and South Australia. The word “koala” comes from an Australian aboriginal word meaning “no drink”.
Sometimes people call them “koala bears” but koala is not a bear. It belongs to a special group of Australian mammals, called marsupial(有袋类). Female marsupials have a pouch where the baby animals live after they are born.
Koalas have soft, thick, grey or brown fur on their backs. The fur on the stomach is white. Koala that live in the south have thicker fur than those in the north because of the cold winters, whereas the koalas in the northern part of the country live in warm to hot weather most of the year so have thinner fur. A koala has a large hairless nose and round ears. Koalas don’t have tails. Adult koalas measure between 7 and 14 kilograms.
Koalas spend nearly all their time in the trees using their sharp, curved claws and long toes to climb about and to hold on to the tree branches. They sleep most of the day, and feed and move from tree to tree mainly at night.
The reason koala sleep for much of the day is because their food eucalyptus(桉树) leaves are very tough so they use a lot of energy to digest. Sleeping saves energy. Eucalyptus leaves are poisonous to almost every other animal. Koalas rarely drink water; they get water from the leaves they eat.
Each koala has a home range made up of several trees that they visit regularly. They normally do not visit another koala’s home trees except that a male is looking for a female to mate with.
【小题1】Which of the following statements is NOT true about the name “koala bear”?

A．The name was given by the native in Australia
B．The word “koala” is an original English word
C．The name describes one of its living habits
D．The name is partly false
【小题2】Which of the following is closest in meaning to the underlined word “punch”？
A．HouseB．CaveC．PocketD．Nest
【小题3】Why do the koalas live in the south have thicker fur than those in the north?
A．The thicker fur can protect them from the colder weather
B．It’s always hot in summer in the north
C．It’s always cold in the winter in the south
D．They have to move to the north in the winter
【小题4】Why do koalas sleep much in the day?
A．Their foods are poisonous
B．They want to save energy for the activities at night
C．They can’t get enough energy from their tough foods
D．They can’t get enough water from their leaves


Koalas are pictured everywhere in Australia-on cleaning products, on “boxes of chocolate, on sports team shirts. Yet the animals live only in pockets along the east coast.
They once inhabited the entire coastline. The koala population dropped after farmers cut down many of the forests where koalas lived, and hunters killed the animals for their fur.
By the early 1900s, “koalas were basically shot out of south Australia,” says ecologist Bill Ellis, who studies the relationships among living things and their environments.
I recently joined Ellis and his team in a forest on St Bees Is land, 19 miles off the northeastern coast of Australia, with eight other volunteers. The island is a natural laboratory, yielding findings that may help protect koalas elsewhere on the continent.
The volunteers searched the island for koalas in the blue gum trees. When we found a koala, we gathered information about the trees in the area.
Blue gum is a species of the eucalyptus tree in which the funny leaf eaters spend most of their time. Eucalyptus trees are native to Australia, and their leaves are the main food source for koalas. Although koalas can walk on the ground, they are better suited for life in the canopy, the high cover of branches and leaves in a forest.
What has Ellis’s research told him so far? The population of St Bees seems to be healthy. Yet Ellis wonders whether the koalas might be heading for hard times. The island is overrun with wild goats, and Ellis thinks the goats are eating the small blue gum trees.
Without those trees, the koalas will run out of food in the future. Ellis hopes more research will help him understand how to protect the blue gum trees-and the koalas that depend on them. “I think that’s what everyone is trying to do-to make a difference.” Ellis says.
59. It can be inferred from the first paragraph that     .
A. koalas’ pictures can be found everywhere in the world
B. koalas in Australia like to eat chocolate
C. only in the east coast of Australia can you find koalas
D. you can buy the pictures of koalas only in the east coast of Australia
60. Which of the following is TRUE about koalas?
A. They usually hide in a cave.     B. They feed on the leaves of blue gum trees.
C. They prefer to walk on the ground.  D. They don’t adapt to the high cover of branches.
61. What will Ellis most probably start to do next?
A. To keep the population of St Bees healthy.
B. To kill all the goats on the island.
C. To find some new foods for goats.
D. To protect blue gum trees for koalas.
62. The purpose of writing this passage is to      .
A. expect people to concern about the life of koalas
B. record trip to Australia for watching koalas
C. present some basic knowledge of koalas’ life
D. introduce the ecosystem of wildlife in Australia

Koala bears as pets might be appealing to many of us. However, there are quite a few points to consider even before thinking of adopting one.

         Koala bears are one of the most lovely Australian animals. In certain cases where the koala has been raised by hand, they have turned out to be quite affectionate pets. These people tied a piece of fur to a pillow and placed it beside a joey (a baby kola) as a substitute (替代物) for the mother koala. This trick seemed to work well with the baby koala. However, it is a known fact that human handling causes stress to koalas. In my personal opinion, this aspect clouds the fact that koala bears can be tamed (驯服).

         In Australia the koala is a priority animal as far as conservation status assessment is concerned. It was hunted to near extinction (灭绝) for its fur. In fact the koala had been wiped out from South Australia in the 1920s. However, rehabilitation efforts have brought the animal back in the state. As for the Australia government, the koala is not a threatened animal, but the US government does list the koala as one.

         Although they may live in 40 to 60 kinds of eucalyptus trees, they prefer only 10 to 14 specific kinds. Koalas sleep for most part of the day, which is about 16 to 18 hours, and for most of their waking hours all they do is eat. Koala bears eat the leaves of eucalyptus trees. A full-grown koala can eat almost 2 to 3 pounds of leaves in a day. Despite their slow movements and sweet look, koala bears can be vicious when hungry. Other than this, there are the stress caused to koalas due to human handling and the fights that start in koalas.

         Almost everyone finds koalas lovely in the zoo. However, as far as having koala bears as pets is concerned, there are legal issues to consider. Other than that, being able to provide for its diet and habitat is another point that needs some attention before any law legalizing their adoption as pets is passed.

1.What’s the author’s attitude towards people raising the koala?

A. Optimistic.              B. Grateful.                           C. Cautious.                          D. Enthusiastic.

2.Why did Australians hunt the koala?

A. To get its fur.     B. To eat its meat.                 C. To wipe it out.                 D. To have it for fun.

3.The underlined word “vicious” in Paragraph 4 probably means __________.

A. fierce and dangerous                                                  B. patient and friendly

C. afraid and defensive                                                    D. lovely and interesting

4.It can be inferred from the passage that __________.

A. koala bears tend to live in groups                            

B. koala bear care can be very demanding

C. koala bears are not particular about their food     

D. koala bears are the No. 1 threatened animal in the US

 

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网