職稱(chēng)英語(yǔ)等級(jí)考試模擬題理工類(lèi)AB級(jí)(3)

字號(hào):

練習(xí):
    1.The method used by the Columbia University researchers can predict E1 Nino a few months in advance.
    A.Right B.Wrong C.Not mentioned
    2. The Columbia University researchers studied the relationship between the past EI Nino occurrences and sea—surface temperatures.
    A.Right B.Wrong C.Not mentioned
    3. The Columbia University researchers are the first to use sea-surface temperatures to match the past EI Nino occurrences.
    A.Right B.Wrong C.Not mentioned
    4. Weare’s contribution in predicting E1 Nino,was highly praised by other meteorologists.
    A.Right B.Wrong C.Not mentioned
    5. According to a Chinese report,the flooding in China caused by E1 Nino in 1 99 1 and 1 997 affected 200 million Chinese people.
    A.right B.Wrong C.Not mentioned
    6. It takes about eight months for El Nino to reach its peak.
    A.right B.Wrong C.Not mentioned
    7. A special institute has been set up in America to study E1 Nino.
    A.Right B.Wrong C.Not mentioned
    第三部分:概括大意與完成句子 (每題1分,共8分, 建議10分鐘以?xún)?nèi)完成)
    閱讀下面這篇短文,短文后有2項(xiàng)測(cè)試任務(wù):(1)1---4 題要求從所給的6個(gè)選項(xiàng)中為第2--5 段每段選擇1個(gè)正確的小標(biāo)題;(2)第5--8題要求從所給的6個(gè)選項(xiàng)中選擇4個(gè)正確的選項(xiàng),分別完成每個(gè)句子。請(qǐng)將答案涂在答題卡相應(yīng)的位置上。
    難度B/A級(jí)
    Blasts from the past
    1 Volcanoes were more destructive in ancient history.Not because they were bigger, but because the carbon dioxide they released wiped out 1ife with greater ease.
    2 Paul Wignall from the University of Leeds was investigating the link between volcanic
    eruptions and mass extinctions.Not a11 volcanic eruptions killed off large numbers of animals,but all the mass extinctions over the past 300 million years coincided with huge formations of volcanic rock.To his surprise,the older the massive volcanic eruptions were,the more damage they seemed to do.
    3 Wignall calculated the“ killing efficiency ”for these volcanoes by comparing the
    proportion .ion of life they killed off with the volume of lava that they produced.He found that size for size,older eruptions were at least 1 0 times as effective at wiping out life as their more recent rivals.
    4 The Permian extinction,for example,which happened 250 million years ago,is marked
     by floods of volcanic rock in Siberia that cover an area roughly the size of western Europe.Those volcanoes are thought to have pumped out about 10 gigatonnes of carbon as carbon dioxide.The global warming that followed wiped out 80 per cent of all marine genera at the time。And it took 5 million years for the planet to recover.