Oneofthemostpopularpetsintheworld，theAustraliantreefrog...

問題詳情：

One of the most popular pets in the world，the Australian tree frog，is originally a native of Australia，though the pet trade has transported it far and wide．It has successfully adapted to New Zealand and the United States．It’s one of the largest members of its species and can reach up t0 10 centimetres in length．Their．1ife spans(壽命)are also longer than most of their frog cousins and can reach between16 t0 20 years in captivity．In the wild，their lives are smaller due to their natural enemies．

   Their skin color ranges anything between light green and dark green，depending on the temperature of the place where they live and the co1or of the environment around where they live,as it’s supposed to make them difficult to be seen by their natural enemies．They come out only at night to hunt，feed and mate．During the day，they find dark，wet areas to sleep in．They aren’t seen at all during the winter．

    As the Australian tree frog isn’t equipped with teeth．it cannot tear apart its prey(獵物)．It needs to feed on food that can fit in its mouth．Therefore its diet consists of insects，such as spiders，and flies，and small animals， such as other frogs，bats and sometimes even mice．For the smaller prey，they use their sticky tongues to shoot at the close range prey．For larger prey, they attack the prey and force it into their mouths with their hands. They also have some natural enemies that feed on them．

    The Australian law protects the tree frog by giving it a protected status The IUCN International Union for Conservation of Nature)，however，gives it a“least concern”status．The broad range of habitats(棲息地)that the frog can survive in and its long life ensure that this frog won’t lose population．

    This creature is really a very popular pet If you get an Australian green tree frog as a pet，do remember to feed it in proper amounts and let it loose for exercise．   

28. What can be the main idea of the passage?

    A．How to keep frogs as pets               B．Animals unique to Australia   

    C.  Facts about the Australian tree frog.       D．Why frogs can make good pets?

29. What can we know about the skin color of Australian tree frogs?

   A. It changes at different times of the day．

   B. It helps them with their hunting for food．

   C. It shows what development stage they are in．

   D. It offers them a certain degree of protection.

30. Paragraph 3 mainly talks about the Australian tree frog’s _____.

A.      feeding and hunting habits            B. natural enemies

C. living environments and inhabitats      D. survival skills

can we know about the Australian tree frog from the passage?

   A. There is no law protecting it yet.

   B. Its teeth help tear its prey into pieces．

   C. It sleeps in the daytime and hunts at night．

D. It has been declared an endangered species by the IUCN．

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