The chemical is <u>deadly</u> to rats but safe to cattle.

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• 1The conference <u>explored</u> the possibility of closer trade links.

  A.denied

  B.investigated

  C.stressed

  D.created

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• 2Almost all economists agree that nations <u>gain</u> by trading with one another.

  A.work

  B.profit

  C.rely

  D.prove

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• 3The train came to__________stop, making us wonder where we were.

  A.an uncertain

  B.a slow

  C.an unexpected

  D.a smooth

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• 4If wool is put into hot water, it tends to <u>shrink</u>.

  A.disappear

  B.expand

  C.break

  D.contract

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• 5Of all the planets in this solar system, Mercury is <u>nearest</u> the Sun.

  A.most like

  B.closest to

  C.hotter than

  D.heavier than

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• 6During his lifetime he was able to <u>accumulate</u> quite a fortune.

  A.control

  B.spend

  C.collect

  D.exchange

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• 7It's impolite to <u>cut in</u> when two persons are holding a conversation

  A.leave

  B.talk loudly

  C.standup

  D.interrupt

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• 8Ordinary plants are unable to survive in the desert mainly because of the changeable weather.

  A.Right

  B.Wrong

  C.Not mentioned

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• 9Grasses and flowers in desert are able to survive because they stay in the form of seeds to wait for the right amount of water to come.

  A.Right

  B.Wrong

  C.Not mentioned

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• 10Grasses and flowers in the desert whose life cycles are short shows their ability to adapt to the quick disappearance of rainwater there after it falls in spring.

  A.Right

  B.Wrong

  C.Not mentioned

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