分析 由全文,可知本文主要討論了基因技術(shù)在現(xiàn)實社會中的應(yīng)用,比如人們可以利用它來治療癌癥和心臟病等,可以節(jié)省大量的錢財,有益于經(jīng)濟(jì),同時還可以使得人類長壽,并且它還可以治療一些遺傳病等等.
解答 8.細(xì)節(jié)理解題.根據(jù)第二段第一句中的"cancer and heart disease"可知這兩大殺手指的是癌癥和心臟。蔬xC.
9.段落大意題.從第三段的第二句"Some families,with the English imperial family being a good example,have hereditary(遺傳性的) diseases."和第五句"But gene technology can solve this problem perfectly."可知,這一段主要介紹了基因技術(shù)可以治療遺傳病的情況.故選C.
10.細(xì)節(jié)理解題.由第三段的最后一句"Scientists just need to find the wrong gene and correct it,and a healthy child will be born."可知利用基因技術(shù)治療遺傳病的主要方法是找出錯誤的基因然后糾正它.故選B.
11.主旨大意題.由全文,可知本文主要討論了基因技術(shù)在現(xiàn)實社會中的應(yīng)用,比如人們可以利用它來治療癌癥和心臟病等,可以節(jié)省大量的錢財,有益于經(jīng)濟(jì),同時還可以使得人類長壽,并且它還可以治療一些遺傳病等等.故選A.
點評 本文是一個科教類閱讀理解,題目涉及多道細(xì)節(jié)理解題,做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測,一定要做到有理有據(jù).
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Set a certain bedtime and rising time A certain bedtime and rising time can help you build up your body clocks.Set a bedtime which is good and natural for you.Don't change your bedtime and rising time on weekends |
Avoid exciting activities just before sleeping Exciting activities get your thoughts running.At the same time,if you make tomorrow's plan or read an exciting story before turning off the light,it doesn't give you enough time to relax before you try to sleep. |
Keep the bedroom for sleeping only It's a bad habit for you to use your bedroom as a place to eat,watch TV,read,talk on the phone,or discuss important matters with your family members.Break that habit to get better sleep. Don't go to bed too early Your body usually lets you sleep only the number of hours it needs.You should decide how many hours you must sleep in order not to experience daytime sleepiness. |
Take a warm shower before your bedtime A twenty-minute warm shower at a temperature of about 45-50not only is a great relax at day's end,but also raises your body temperature by several degrees.The coming drop in temperature of your body will naturally make you feel sleepy. |
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