We don’t know the price of the self-driving car because     .

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• 1What will happen if you sit in the chair for too long、

  A.Your head will hurt.

  B.You will be very nervous.

  C.The chair will move.

  D.The chair will warn you to mov

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• 2The Water Talky was invented by     .

  A.German scientists

  B.a young child

  C.a UK company

  D.some swimmers

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• 3The new light bulb     .

  A.is brighter than the old o nes

  B.isn’t good for the environment

  C.can last at least 25 years

  D.can last less than 25 years

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• 4— Many thanks for what you’ve done for us.—     .

  A.Don’t mention it

  B.Never mind

  C.That’s right

  D.You seem to have a point

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• 5— Do you know      in ancient China、— I have no ide

  A.But I know people once used tree leaves to make paper.A.how paper was made

  B.how was paper made

  C.what paper was made

  D.what was paper made

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• 6The self-driving car can collect information using     .①video cameras     ②a computer③a LIDAR sensor     ④a computer system

  A.①②

  B.①③

  C.①②③

  D.①②③④

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• 7According to CNN, self-driving cars will     .

  A.send us more quickly to the workplace

  B.lead to heavier traffic

  C.improve traffic condition in big cities

  D.carry more people than a normal car

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• 8How many lions died during the last decade、

  A.About 2,000.

  B.About 8,000.

  C.About 10,000.

  D.About 1,200.

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• 9Richard wanted to make an automated flashlight because     .

  A.he wanted to became famous

  B.he had lots of broken flashlights

  C.h e found lions were afraid of humans and flashlights

  D.he wan ted to make the night as bright as the day

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• 10How did the automated flashlight drive lions away、

  A.By making loud noise.

  B.By producing strong light that could kill lions.

  C.All the bulbs flashed at the same time.

  D.Its bulbs flashed one by on

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