Authors Kyle Kurpinski and Terry D.Johnson pretty much have me convinced that human cloning is quite possible and is a future certainty.Kurpinski and Johnson are both bio-engineering experts;unlike similar scientists you have seen in the movies,they both have a sense of humour.What surprises me is that Kurpinski and Johnson are able to take something as complicated as DNA and make it understandable.
The book HowtoDefeatYourOwnClone teaches us what is now known as DNA-encoded(编码),how that happens,and why people with similar DNA don’t look or act the same.The book not only helps us get a basic understanding of what DNA and its purpose are,but also explains cloning and stem cell(干细胞) research.It occurs to me that a lot of people who are against stem cell research don’t know what they are protesting about.The authors provide a history of cloning,as well as information about stem cells.
The real fun starts when the authors attack various myths about cloning.Obviously,too many people have been watching too many bad movies and television programs.Remember they’re just fictional stories.If,somehow,scientists manage to clone you,twenty years from now your clone isn’t going to kill you.Among the myths explored and exploded are that a clone will know everything you know and will act as you do,that heads which are cut off can be kept alive,and that a clone has no belly button(肚脐).Many of the myths are ridiculous but many people believe them.
Kurpinski and Johnson also detail some bio-improvements “that really work”.You see,genes can be controlled to help you sleep better and become smarter,healthier,and taller.Well...not exactly you,but future generations.
If you do wind up in a battle with your own clone,who will be considerably younger than you,remember that it is not you and that it doesn’t know what you know.
21.Many bioengineering experts in movies are .
A.humorous B.wealthy
C.serious D.crazy
答案:C
解析:推理判断题。从第一段中的
“...unlikesimilarscientistsyouhaveseeninthemovies,theybothhaveasenseofhumor.”可知电影中的生物工程学家一般都是没有幽默感的。
22.Which of the following things are in the book HowtoDefeatYourOwnClone?
a.What DNA and its purpose are.
b.Who is against cloning.
c.The history of cloning.
d.The myths about cloning.
e.The disadvantages of cloning.
A.a,b,e B.a,c,d
C.b,d,e D.b,c,d
答案:B
解析:细节理解题。从第二段中的
“ThebooknotonlyhelpsusgetabasicunderstandingofwhatDNAanditspurposeare...Theauthorsprovideahistoryofcloning...”及第三段中的
“Therealfunstartswhentheauthorsattackvariousmythsaboutcloning.”可知答案。
23.We can learn from the passage that biotechnology .
A.has been banned in many countries around the world
B.is being used to improve one’s intelligence right now
C.can help improve the physical condition of future generations
D.is sure to cure any disease in the near future
答案:C
解析:推理判断题。从第四段中的
“...genescanbecontrolledtohelpyousleepbetterandbecomesmarter,healthier,andtaller.Well...notexactlyyou,butfuturegenerations.”可知C项正确。
