The example of a bird sleeping in front of a mirror indicates that ________.

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• 1According to the passage, birds often half sleep because ________.

  A.they have to watch out for possible attacks

  B.their brain hemispheres take turns to rest

  C.the two halves of their brain are differently structured

  D.they have to constantly keep an eye on their companions

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• 2A new study on birds’ sleep has revealed that ________.

  A.half brain sleep is found in a wide variety of birds

  B.half brain sleep is characterized by slow brain waves

  C.birds can control their half brain sleep consciously

  D.birds seldom sleep with the whole of their brain at rest

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• 3While sleeping, some water mammals tend to keep half awake in order to ________.

  A.alert themselves to the approaching enemy

  B.emerge from water now and then to breathe

  C.be sensitive to the ever changing environment

  D.avoid being swept away by rapid currents

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• 4By “just the tip of the iceberg” (Line 2, Par

  A.8), Siegel suggests that ________.A.half brain sleep has something to do with icy weather

  B.the mystery of half brain sleep is close to being solved

  C.most birds living in cold regions tend to be half sleepers

  D.half brain sleep is a phenomenon that could exist among other species

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• 5Which of the following is evidence that TT is widely practiced、

  A.TT has been in existence for decades.

  B.Many patients were cured by therapeutic touch.

  C.TT therapists are often employed by leading hospitals.

  D.More than 100,000 people are undergoing TT treatment.

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• 6Very few TT practitioners responded to the $1 million offer because ________.

  A.they didn’t take the offer seriously

  B.they didn’t want to risk their career

  C.they were unwilling to reveal their secret

  D.they thought it was not in line with their practice

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• 7The purpose of Emily Rosa’s experiment was ________.

  A.to see why TT could work the way it did

  B.to find out how TT cured patients’ illnesses

  C.to test whether she could sense the human energy field

  D.to test whether a human energy field really existed

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