If you've ever had a dog,you know just how deep a connection you can develop with "man's best friend".But a dog's life is much shorter than humans,about 12 to 15 years long,which means every dog owner has to go through the heart-breaking moment when their loving pet passes away.
Why not make a clone of that dog then?This is the solution offered by a South Korean company,Sooam Biotech Research Foundation.The company has already successfully cloned at least 400 dogs,mostly for US customers,ever since it pioneered the technique in 2005.Now,Sooam Biotech has introduced its business to UK dog owners as well,offering them dogs that look just like their lost ones.
To clone a dog,researchers first need to take a skin cell from a living dog or one that has just died.Meanwhile,another dog is selected to supply an egg.Researchers then replace the DNA in the egg with that from the skin cell and implant the egg into the womb(子宮)of a female dog.The egg grows into a puppy over the following two months.The whole process takes less than a day,but it comes at a shockingly high price — around £63,000.But if you can't afford it now,you can also save the cell in a laboratory and access it at a later date.
However,magical as cloning might sound,there is no guarantee that the cloned dog will be a perfect copy of the original one.Just like identical twins of humans,they share the exactly same DNA but there will still be small differences between them."The spots on a Dalmatian (斑點狗) clone will be different,for example." Insung Hwang,head of Sooam Biotech,told The Guardian.
Dog owners will also have to accept the fact that personality is not "cloneable".Apart from genes,personality is also determined by upbringing and environment,which are both random elements that cloning technologies simply cannot overcome,Professor Tom Kirkwood at Newcastle University,UK,told The Telegraph.
Perhaps bringing our dogs back by cloning is not the best way to remember them after all.Kirkwood,a dog owner himself,pointed out,"An important aspect of our relationship with them is coming to terms with the pain of letting go."
(1)What service does Sooam Biotech Research Foundation offer? AA
A.Making copies of pet dogs.
B.Giving pet dogs identical twins.
C.Helping dogs give birth to more puppies.
D.Helping dog owners love their dogs more.
(2)Which order is correct in the dog cloning process? DD
a.An egg is taken from another dog.
b.A skin cell is taken from the pet dog.
c.The egg grows into a puppy in two months.
d.The egg is placed in the womb of a female dog.
e.The DNA in the egg is replaced by the DNA from the skin cell.
A.a(chǎn)→d→b→e→c
B.a(chǎn)→e→b→d→c
C.b→a→d→e→c
D.b→a→e→d→c
(3)What can we learn about dog cloning from the passage? CC
A.It has not been put into practice until recently.
B.It is very popular among US and UK pet owners.
C.It might not give the owners an exactly same dog.
D.It is very expensive and usually takes half a year to complete.
(4)What does Kirkwood think of dog cloning? AA
A.He disagrees with it.
B.He supports it.
C.He is curious about it.
D.He thinks it unbelievable.
【答案】A;D;C;A
【解答】
【點評】
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發(fā)布:2024/5/27 14:0:0組卷:3引用:2難度:0.7
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1.British children's writer Roald Dahl ate chocolates and sweets "pretty much every mealtime",remembers daughter Ophelia Dahl.
After dinner,whether dining alone or entertaining guests,Dahl would pass around a little red plastic box full of Mars Bars,Milky Ways,Maltesers,Kit Kats and much more.
He knew the history of all the sweets and could tell you exactly when they were invented.1937 was a big year when Kit Kats (his favorite),Rolos and Smarties (his dog,chopper's favorite) were invented.He wrote a history of chocolate,lecturing schoolchildren to commit such dates to memory(熟記),such as 1928 when "Cadbury's Fruit and Nut Bar popped up on the scene",saying. "Don't bother with the Kings and Queens of England.All of you should learn these dates instead.Perhaps the Headmistress(女校長)will see from now on that it becomes part of the major teaching in this school."
According to Dahl,the Golden Years of Chocolate were 1930-1937.In 1930,Roald Dahl was 14 years old.He was a student at Repton,a famous boys' boarding school in England.It was a tough environment:those in authority were more interested in controlling than educating the students.
Ironically(諷刺地),it was at this difficult period that chocolate became Dahl's passion.Near Repton was a Cadbury chocolate factory.Every so often,Cadbury would send each schoolboy a sampler(樣品)box of new chocolates to taste and grade.They were using the students---"the greatest chocolate bar experts in the world to test out their new inventions.
This was when Dahl's imagination took flight.He pictured factories with inventing rooms with pots of chocolate and fudge(軟糖)and "all sorts of other delicious fillings bubbling away on the stoves".
"It was lovely dreaming those dreams…when I was looking for a plot for my second book for children.I remembered those little cardboard boxes(紙盒)and the newly invented chocolates inside them,and I began to write a book called Charlie and the Chocolate Factory."
For the record,Roald Dahl did not like chocolate cake or chocolate ice cream.He said, "I prefer my chocolate straight."
(1)What's the purpose of the first paragraph?
A.To introduce the main topic---Roald Dahl.
B.To introduce Dahl's love for chocolate.
C.To introduce main character's daily life.
D.To introduce some important characters.
(2)What can we infer from the passage about Roald Dahl?
A.He treated himself with various chocolate after dinner secretly.
B.He has a good knowledge of chocolate,especially its history.
C.He used to lecture schoolchildren of a boys' boarding school.
D.He only wrote some books related to the history of chocolate.
(3)What happened during the Golden Years of Chocolate?
A.It was a great time for children to get educated.
B.Those years stopped Dahl's interest in chocolate.
C.Students could become chocolate experts then.
D.Roald Dahl's passion for chocolate was lit up then.
(4)
A.the dream about chocolates.
B.Factories with chocolate and fudge.
C.Those boxes with chocolate.
D.Chocolate cakes and ice cream發(fā)布:2025/1/30 8:0:1組卷:0引用:1難度:0.5 -
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Emma Watson,who starred in films based on the novels about a fictional schoolboy wizard,has been hiding books on the Tube for passengers to read through.
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D.pessimistic發(fā)布:2025/1/30 8:0:1組卷:0引用:1難度:0.5 -
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A.The author had a poor memory.
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A.Interesting.
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D.To share the author's stories of learning a new language.發(fā)布:2025/1/30 8:0:1組卷:5引用:1難度:0.5
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