The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．

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• 1I was _____ tired _____ I thought I couldn't cover the 70-mile hiking. But I made it finally.

  A.so; that

  B.such; that

  C.so; as to

  D.such; as to

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• 2A child ______ parents are dead is called an orphan.

  A.who

  B.who's

  C.whose

  D.which

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• 3Living in the desert involves a lot of problems，______water shortage is the worst.

  A.of which

  B.when

  C.of whose

  D.Which

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• 4—Why are you staring at me? —You look stupid! The way you wear is______ annoys most.

  A.which

  B.where

  C.how

  D.what

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• 5It is still unclear ______ the little boy got the CD player to work．

  A.where

  B.what

  C.that

  D.how

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• 6Don't give up regardless of difficulty and failure, ________ you'll never achieve your goals.

  A.and

  B.but

  C.or

  D.so

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• 7I usually do the washing up and leave the cooking to my wife，______she's a better cook     than me．

  A.unless

  B.as

  C.even though

  D.in case

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• 8. ——where did you meet Michael Jackson for the first time ? ——It's in Hilton Tokyo hotel______he lived during his global tour.

  A.that

  B.where

  C.which

  D.what

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• 9Because of Einstein's Theory of Relativity, scientists never again regarded the world ______ .

  A.as before they did

  B.as they regarded before

  C.as they did before

  D.as they had before

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• 10He rushed out of the burning house with the little boy in his arms ____________ the roof fell down and the boy was saved.

  A.after

  B.as

  C.before

  D.until

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