According to the passage, birds often half sleep because ______________.

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• 1A new study on birds’ sleep has revealed that ____________.

  A.birds can control their half-brain sleep consciously

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

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

  D.half-brain sleep is characterized by slow brain waves

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• 2In ________ times human beings did not travel for pleasure but to find a more favourable climate.

  A.prime

  B.primitive

  C.primary

  D.preliminary

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• 3Put on dark glasses or the sun will ________ you and you won’t be able to see.

  A.discern

  B.distort

  C.distract

  D.dazzle

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• 4To ________ is to save and protect, to leave what we ourselves enjoy in such good condition that others may also share the enjoyment.

  A.conserve

  B.conceive

  C.convert

  D.contrive

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• 5The helicopter a light plane and both pilots were killed.

  A.coincided with

  B.stumbled on

  C.tumbled to

  D.collided with

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• 6The example of a bird sleeping in front of a mirror indicates that _____________.

  A.birds prefer to sleep in pairs for the sake of security

  B.the phenomenon of birds dozing in pairs is widespread

  C.a single pet bird enjoys seeing its own reflection in the mirror

  D.even an imagined companion gives the bird a sense of security

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• 7While sleeping, some water mammals tend to keep half awake in order to __________.

  A.avoid being swept away by rapid currents

  B.emerge from water now and then to breathe

  C.alert themselves to the approaching enemy

  D.be sensitive to the ever-changing environment

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• 8By “just the tip of the iceberg” (Line 2, Par

  A.8), Siegel suggests that ____________.A.half-brain sleep is a phenomenon that could exist among other species

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

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

  D.half-brain sleep has something to do with icy weather

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• 9Which 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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• 10Very 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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