In an ecosystem, plants, animals and humans live together in_______

试卷相关题目

• 1Paragraph 5_______

  A.What can we do to help protect ecosystems、

  B.What are different types of ecosystems、

  C.What is an ecosystem、

  D.What destroys ecosystems、

  E.How does an ecosystem work、

  F.Why are ecosystems important、

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• 2Paragraph 4_______

  A.What can we do to help protect ecosystems、

  B.What are different types of ecosystems、

  C.What is an ecosystem、

  D.What destroys ecosystems、

  E.How does an ecosystem work、

  F.Why are ecosystems important、

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• 3Paragraph 3_______

  A.What can we do to help protect ecosystems、

  B.What are different types of ecosystems、

  C.What is an ecosystem、

  D.What destroys ecosystems、

  E.How does an ecosystem work、

  F.Why are ecosystems important、

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• 4Paragraph 2_______

  A.What can we do to help protect ecosystems、

  B.What are different types of ecosystems、

  C.What is an ecosystem、

  D.What destroys ecosystems、

  E.How does an ecosystem work、

  F.Why are ecosystems important、

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• 5The robotic technology for surgeries on people has brought a handsome Medrobot- ics.

  A.Right

  B.Wrong

  C.Not mentioned

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• 6Plants are essential in an ecosystem because to other living creatures they are_______

  A.our share of resources

  B.a biological creature

  C.a given area

  D.the maintenance of the ecosystem

  E.the source of food

  F.various species

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• 7Plants, animals and humans are all effective in_______

  A.our share of resources

  B.a biological creature

  C.a given area

  D.the maintenance of the ecosystem

  E.the source of food

  F.various species

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• 8To protect our ecosystems we should not use more than_______

  A.our share of resources

  B.a biological creature

  C.a given area

  D.the maintenance of the ecosystem

  E.the source of food

  F.various species

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• 9What is the main idea of this passage、

  A.Public lands are one of the main sources of revenues.

  B.Public lands play an important role in energy production.

  C.Public lands should be developed to ease energy shortage.

  D.Public lands store huge energy resources for further development.

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• 10Which of the following statements is true of public lands in the U. S. 、

  A.The majority of undiscovered natural gas is stored there.

  B.Half of US energy is produced there.

  C.Most of coal was produced from there in 2000.

  D.Most energy resources are reserved ther

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