相關(guān)習(xí)題
 0  4618  4626  4632  4636  4642  4644  4648  4654  4656  4662  4668  4672  4674  4678  4684  4686  4692  4696  4698  4702  4704  4708  4710  4712  4713  4714  4716  4717  4718  4720  4722  4726  4728  4732  4734  4738  4744  4746  4752  4756  4758  4762  4768  4774  4776  4782  4786  4788  4794  4798  4804  4812  151629 

科目： 來源： 題型：單選題

Martin Luther King , the great Black leader in the movement against racial discrimination , was ________ the Nobel Prize for peace for his outstanding to world peace．


  1. A.
    rewarded
  2. B.
    awarded
  3. C.
    assigned
  4. D.
    assisted

查看答案和解析>>

科目： 來源： 題型：單選題

________ the wise leadership of our Party , we have made great achievements during the last twenty years．


  1. A.
    Owing to
  2. B.
    Due to
  3. C.
    In spite of
  4. D.
    Because

查看答案和解析>>

科目： 來源： 題型：單選題

Switzerland is well - known for its impressive mountainous ________．


  1. A.
    views
  2. B.
    scenes
  3. C.
    scenery
  4. D.
    sight

查看答案和解析>>

科目： 來源： 題型：單選題

Our teacher always gives us two or three hints (暗示) before ________ the answer．


  1. A.
    gives away
  2. B.
    puts away
  3. C.
    gets away
  4. D.
    takes away

查看答案和解析>>

科目： 來源： 題型：單選題

Shakespeare is well-known ________ a great writer ________ his excellent plays．


  1. A.
    as; for
  2. B.
    for; as
  3. C.
    to; for
  4. D.
    for; to

查看答案和解析>>

科目： 來源： 題型：單選題

________, Alexander Graham Bell was still a young man．


  1. A.
    He invented the telephone
  2. B.
    The telephone was invented
  3. C.
    His invention of the telephone
  4. D.
    When he invented the telephone

查看答案和解析>>

科目： 來源： 題型：單選題

I tried hard, but it doesn't _____.


  1. A.
    make sense
  2. B.
    make a sense
  3. C.
    make senses
  4. D.
    in a sense

查看答案和解析>>

科目： 來源： 題型：單選題

Then she saw a lovely diamond necklace ________．


  1. A.
    being a big blue stone in the centre
  2. B.
    of a big blue stone in the centre
  3. C.
    which is a big blue stone in the centre
  4. D.
    with a big blue stone in the centre

查看答案和解析>>

科目： 來源： 題型：單選題

Many scientists are sure ________will be useless learning a theory without practice．


  1. A.
    that
  2. B.
    that it
  3. C.
    it that
  4. D.
    there

查看答案和解析>>

科目： 來源： 題型：閱讀理解

Plants are flowering faster than scientists predicted（預(yù)測(cè)）in reaction to climate change, which could have long damaging effects on food chains and ecosystems.
Global warming is having a great effect on hundreds of plant and animal species around the world, changing some living patterns, scientists say.
Increased carbon dioxide（CO2）in the air from burning coal and oil can have an effect on how plants produce oxygen, while higher temperatures and changeable rainfall patterns can change their patterns of growth.
“Predicting species’ reaction to climate change is a major challenge in ecology,” said the researches of several U.S. universities. They said plants had been the key object of study because their reaction to climate change could have an effect on food chains and ecosystem services.
The study, published on the Nature website, uses the findings from plant life cycle studies and experiments across four continents and 1,634 species. It found that some experiments had underestimated（低估）the speed of flowering by 8.5 times and leafing by 4 times.
“Across all species, the experiments under-predicted the speed of the advance — for both leafing and flowering — that results from temperature increases,” the study said.
The design of future experiments may need to be improved to better predict how plants will react to climate change, it said.
Plants are necessary for life on the Earth. They are the base of the food chain, using photosynthesis（光合作用）to produce sugar from carbon dioxide and water. They let out oxygen which is needed by nearly every organism on the planet.
Scientists believe the world’s average temperature has risen by about 0.8℃ since 1900, and nearly 0.2℃ every ten years since 1979.
So far, efforts to cut emissions（排放）of planet-warming greenhouse gases are not seen as enough to prevent the Earth heating up beyond 2℃ this century — a point scientists say will bring the danger of a changeable climate in which weather extremes are common, leading to drought, floods, crop failures and rising sea levels.

  1. 1.

    What is the key information the author wants to give in Paragraph 1?

    1. A.
      Plants’ reaction to weather could have damaging effects on ecosystem.
    2. B.
      The increasing speed of flowering is beyond scientists’ expectation.
    3. C.
      Climate change leads to the change of food production patterns.
    4. D.
      Food chains have been seriously damaged because of weather.
  2. 2.

    We can learn from the study published on the Nature website that ______.

    1. A.
      plants’ flowering is 8.5 times faster than leafing
    2. B.
      there are 1,634 plant species on the four continents
    3. C.
      scientists should improve the design of the experiments
    4. D.
      the experiments failed to predict how plants react to climate change
  3. 3.

    Scientists pay special attention to the study of plants because _______.

    1. A.
      they can prove the climate change clearly
    2. B.
      they are very important in the food chains
    3. C.
      they play a leading role in reducing global warming
    4. D.
      they are growing and flowering much faster than before
  4. 4.

    What can be inferred from the last two paragraphs about the world’s temperature?

    1. A.
      It has risen nearly 0.2℃ since 1979.
    2. B.
      Its change will lead to weather extremes.
    3. C.
      It is 0.8℃ higher in 1979 than that of 1990.
    4. D.
      It needs to be controlled within 2℃ in this century.

查看答案和解析>>

同步練習(xí)冊(cè)答案