The central part of the Portable Lights technology is

试卷相关题目

• 1To make a living，the Huichol create artwork and

  A.sell it in cities far away from their villages．

  B.sell it to tourists in their villages.

  C.display it in their village museum．

  D.keep it in their homes to attract tourists．

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• 2The Huichol don't use electricity because

  A.it is too difficult for them to change their lifestyle

  B.they know nothing about it

  C.it costs too much to string power lines

  D.they don't need it

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• 3During a hurricane one should stay away from_____________.

  A.inland flooding

  B.natural disaster

  C.early warning

  D.windows and glass doors

  E.a constant speed

  F.different labels

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• 4When a hurricane arrives, fishermen are in great danger if they are at sea and do not get_____________.

  A.inland flooding

  B.natural disaster

  C.early warning

  D.windows and glass doors

  E.a constant speed

  F.different labels

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• 5A powerful hurricane may become the most destructive_____________.

  A.inland flooding

  B.natural disaster

  C.early warning

  D.windows and glass doors

  E.a constant speed

  F.different labels

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• 6All of the following are disadvantage of incandescent lights EXPECT

  A.they burn out quickly

  B.they are easily broken

  C.they are not bright enough.

  D.they waste most of the energy produced

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• 7LEDs are different from light bulbs in that

  A.LEDs can send out light of different colors.

  B.LEDs are made up of tiny pieces of rock.

  C.LEDs belong to incandescent lights.

  D.LEDs look like crystals.

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• 8"Spider" and "bird" mentioned in Paragraph 1 are examples to illustrate

  A.there are numerous living species on Earth.

  B.animals are people's friends.

  C.it is easy to see spiders and birds.

  D.there are many types of spiders and birds.

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• 9The goal of the creation of the EOL is to

  A.collect enough data to analyze the living species on Earth.

  B.enlarge an existing Web site of the living species on Earth.

  C.add new information to the existing databases of the living species on Earth.

  D.work out an easy-to-use catalog of every living species on Earth.

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• 10At the starting stage, the EOL will get information from

  A.all the Web sites available.

  B.databases built up by its creators.

  C.the existing scientific databases.

  D.nonscientists with specialized knowledg

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