What does the underlined word "nocturnal" in Paragraph 5 mean、

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• 1What is the researchers' concern over the increase of birds' song output、

  A.The environment might be polluted.

  B.The birds' health might be damaged.

  C.The industry cost might be increase

  D.D.The people's hearing might be affected.

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• 2According to Dr Dominoni's study, what cause robins to sing so much、

  A.The breeding season.

  B.The light in modem

  C.The dangerous environment.

  D.The noise from heavy machinery.

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• 3What can we conclude from the study、

  A.Mothers’working hours should be largely reduced.

  B.Mothers should balance their time for work and rest.

  C.Mothers’labour is of a higher value than it is realise

  D.B.Mothers should balance their time for work and rest.C.Mothers’labour is of a higher value than it is realised.D.Mothers should be freed from housework for social lif

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• 4What is stressed in the last paragraph、

  A.Mothers’importance shows in family all year long.

  B.The sacrifices mothers make are huge but worthwhile.

  C.Mothers’devotion to children can hardly be calculate

  D.D.Investing time in parenting would bring a financial return.

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• 5The biggest challenge for most mothers is from.

  A.emotional demand

  B.low pay for work

  C.heavy workload

  D.lack of training

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• 6Why do some birds thrive in noisy environments、

  A.Because there are fewer dangers.

  B.Because there is more food to eat.

  C.Because there is less light pollution

  D.Because there are more places to take shelter.

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• 7It’s widely believed that the stone blocks were moved to the pyramid site by ______.

  A.rolling them on roads

  B.pushing them over the sand

  C.sliding them on smooth paths

  D.dragging them on some poles

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• 8The underlined part “lubricated the paths” in Paragraph 4 means____.

  A.made the path wet

  B.made the path hard

  C.made the path wide

  D.made the path slippery

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• 9What does the underlined word “it”in Paragraph 7 refer to、

  A.Rolling the blocks with poles attached.

  B.Rolling the blocks on wooden wheels.

  C.Rolling poles to move the blocks.

  D.rolling the blocks with fat.

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• 10Why is rolling better than sliding according to West 、

  A.Because more force is needed for sliding.

  B.Because rolling work can be done by fewer cattle.

  C.Because sliding on smooth road is more dangerous.

  D.Because less preparation on path is needed for rolling.

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