北師大版高中英語(yǔ)選修七unit20newfrontiers能力自評(píng)練習(xí)-wenkub.com
2024-11-26 22:09 本頁(yè)面
【正文】 注意： 1. 詞數(shù) 100左右； 2. 可適當(dāng)增加細(xì)節(jié)，以使行文連貫； 3. 參考詞匯 全民健身日 National Fitness Day。 4. A 主旨大意題。由第四段可知 B 項(xiàng)正確。ground incidents like Chernobyl, affected birth gender across the globe. B. There was an increase in the number of baby boys in Eastern European countries for several years after 1986. C. The Japan’ s nuclear accident will not affect the birth gender of the US because of the long distance. D. Where radioactive material has spread, women can’ t give birth to girls. 3. How does radiation affect birth gender? A. It damages the Y chromosome in sperm. B. It stops the X chromosome from being produced. C. It kills baby girls before they are born. D. It damages the X chromosome in sperm. 4. What does the passage mainly tell us? A. Nuclear radiation leads to millions of fewer baby girls being born. B. Nuclear radiation has bad effects upon people’ s health. C. Worries about radiation risks. D. Nuclear age helps reduce the world population. 答案： 根據(jù)一項(xiàng)新研究，核輻射會(huì)對(duì)精子的 X染色體造成損害，核電站核泄漏事故和炸彈試驗(yàn)釋放的放射性物質(zhì)導(dǎo)致全世界女嬰出生數(shù)量減少了數(shù)百萬(wàn)。nchen, Germany, analysed population data from 1975 to 2021 for the U． S. and 39 European countries. There was an increase in the number of baby boys relative to girls in all of the countries from 1964 to 1975. This was the case in many Eastern European countries for several years after 1986. Scientists are putting the first spike down to the atomic bomb tests of the 1960s and 1970s where radioactive atoms were blasted into the atmosphere. Air currents caught these atoms and then distributed them around the world. They think the second spike is due to the 1986 Chernobyl disaster in which the reactor exploded in Ukraine(烏克蘭 )． The effects of Chernobyl were felt locally and no effect was seen in the U． S., probably because it was too far from the disaster to have an effect. “The closer the country was to Chernobyl, the stronger the effect ， ” said study co173。 yet“ 還 ”
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