Polar bears live mostly on _____ sea ice, which they use as ____ platform for hunting seals.

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• 1Because of ______ high demand for Type AB blood, ______ supplies of it are usually limited.

  A.the; the

  B.不填; 不填

  C.不填; the

  D.a; the

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• 2In ____ film Cast Away, Tom Hanks plays _________ man named Chuck Noland.

  A.a; the

  B.the; a

  C.the; the

  D.a; a

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• 3Each of the 400 people received from their boss____ gift——“Who moved my cheese?”——____ best-seller in the US——to understand how to deal with changes in their lives and work.

  A.the; 不填

  B.a；a

  C.a；不填

  D.the；a

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• 4When the spaceship traveled above, __________ new-looking earth appeared before us, ______ earth that we had never seen before.

  A.a; an

  B.the; an

  C./; the

  D.a; the

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• 5—How about _______ Christmas evening party? —I should say it was _______ success.

  A.a; a

  B.the; a

  C.a; 不填

  D.the; 不填

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• 6We all know that the Spring Festival is _____ special holiday when _______ whole family get together.

  A.the, the

  B.a, a

  C.the, a

  D.a, the

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• 7Nowadays ________ Internet is becoming increasingly popular and new high speed broadband network was recently started.

  A.a; the

  B.the; a

  C.a; a

  D.the; the

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• 8Mandy, _____ university student from Canada, teaches us _____ history of western art.

  A.an;the

  B.a; the

  C.the;/

  D.the; a

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• 9For quite _____ students, their teacher's advice is more important than _____ of their parents.

  A.few; one

  B.a few; that

  C.a little; some

  D.a lot; many

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• 10All of ______ sudden an idea flashed in her mind: she decided to save one or two pennies at ______ time at the grocery.

  A.a; the

  B./; a

  C.the; a

  D.a; a

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