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Research advances over the past decade have told us that, with a little work, we humans can clone just about anything we want, from frogs to monkeys and probably even ourselves!
So, we can clone things, but why would we want to?
Of all the reasons, cloning for medical purposes has the most potential to benefit large numbers of people. How might cloning be used in medicine?
1. Cloning animal models of disease
Much of what researchers learn about human disease comes from studying animal models such as mice. Often, animal models are genetically engineered to carry disease-causing mutations(变异) in their genes. Creating these transgenic(转基因的) animals is a time-intensive process that requires trial-and-error and several generations of breeding(培育). Cloning technologies might reduce the time needed to make a transgenic animal model, and the result would be a population of genetically identical animals for study.
2.Cloning stem cells(干细胞) for the treatment of diseases
Stem cells are the body's building blocks, responsible for developing and repairing the body throughout life. As a result, they might be used to repair damaged or diseased organs and tissues. Researchers are currently looking up cloning as a way to create certain human stem cells for the research of diseases.
3. Cloning farm animals for drug production
Farm animals such as cows, sheep and goats are currently being genetically engineered to produce drugs or proteins that are useful in medicine. Just like creating animal models of disease, cloning might be a faster way to produce large herds of genetically engineered animals.
From Purpose One, we can infer that      .

A.most transgenic animals are clone
B.most animals carry engineered genes
C.most transgenic animal models are not cloned
D.most animals carry disease-causing mutations in their genes

It can be learned from Purpose Two that cloning technologies can be mainly use do    .

A.create damaged or diseased organs and tissues
B.clone genetically defined human stem cells
C.develop and maintain the body
D.repair the body throughout life

According to Purpose Three, cloning technologies can be mainly used to      .

A.speed up the producing of genetically engineered animals
B.produce drugs or proteins that are useful in medicine
C.raise genetically engineered cows, sheep and goats
D.produce large herds of animals for human beings
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When I set out to drop my dad of fat the airport,it was dark and dreary(沉闷的).It started to rain on the way.When I left the airport,the visibility wasn’t clear because of the drops of rain.It was before 6 am.
Even though the road conditions were poor,I drove at my normal speed.I was angry with the more cautious drivers ahead of me that were delaying my drive.The exit ramp(坡道)to the highway was a tight spiral(急盘旋).It is a dangerous spot in good weather and totally scary when the weather is miserable or it is dark.But I didn’t want to slow down and arrive home any later than necessary.I drove down the ramp too fast.The road was wet and my car slid,landing face down on the passenger side.
I didn’t like to drive by myself at the time and had debated taking my husband and son with me on the trip.Thankfully,I was alone in the car.My accident was slight.In fact, I was lucky enough not to have a single scratch.I shuddered to think the injuries my son would have suffered had he been in the backseat of that car with no seatbelt when it rolled.After the ear rolled three times,I found my mobile phone was lost in a pile of small things that were all lying in the bottom of the car.A lady was kind enough to let me borrow her mobile phone,but with-out the numbers preprogrammed who could I call? I was lucky enough to remember my father’s mobile phone number,and fortunate that he hadn’t yet got on his plane.
You never know when an accident will happen.As a driver,I will keep safety in mind by obeying all traffic laws and have safe-driving habits,especially in bad weather.Insist your children always wear their seatbehs.Life is a journey and everyone should value it and enjoy the ride.
Why was the author angry with those drivers?

A.She thought they drove too slowly.
B.They made much noise on the ramp.
C.They didn’t pay attention to the safety.
D.They tried to stop her car on the ramp.

What does the underlined word“shuddered” in Paragraph 3 probably mean?

A.Ensured the safety.
B.Remembered clearly.
C.Trembled because of fear.
D.Took control of the bad situation.

What is the main reason that resulted in the accident?

A.The visibility was not clear.
B.The author drove rather fast.
C.It started to rain heavily then.
D.It was an unsafe spot for driving.

We can learn from this passage that the author _____________.

A.had just a single scratch
B.called her father for help
C.felt sorry because her son was injured
D.found her mobile phone with the help of a lady

In order to help customers to find what they want quickly,it’s important to keep the thou- sands of titles in the Main Street Movies store organized properly.This section of the Employee Handbook will tell you how to organize videos.

Each Main Street Movies store has three main sections:
1.New Releases Wall.
2.Film library.
3.Video Games.
New Releases Wall.A1most 70 percent of movie rentals are new releases,and that is the first place where most customers go when they enter the store.The center section of shelves on this wall holds Hottest Hits.When new titles come into the store,place them on this wall in alphabetical order.The shelves beside Hottest Hits are called Recent Releases.The New Releases Wall,including the Hottest Hits and Recent Releases shelves,holds about 350 titles.
Film Library.The thousands of tides in the Film Library are organized into categories. The films within each category are displayed alphabetically.Here are the categories and their two-letter computer codes:
*Foreign Language tides include films that were originally made in a foreign language and films with foreign language subtitles.A sticker on the back of each box tells which type of film it is.
Video Game.All the video games in Main Street Movies are arranged in alphabetical order.Although video games represent only a small percentage of our inventory(库存),they are stolen more often than any other type of goods in our store.Therefore,video games are never displayed on the shelves. Shelves in the Video Game section hold cardboard with pictures and information about each game.When a customer wants to rent a particular game,you can find the game from the locked case behind the counter.
Whom do you think this passage is most probably written for?

A.The readers in the store.
B.The manager of the store.
C.The customers in the store.
D.The salespersons of the store.

How can a customer find a film with foreign language subtitles?

A.Check the computer.
B.Cheek the center section.
C.Look at the back of the box.
D.Watch a few minutes of the film.

Why can’t video games be seen on the shelves?

A.Because they’ve been sold out.
B.Because they’re in the storehouse.
C.Because they’re in a locked case behind the counter.
D.Because they represent a small percentage of the inventory.

BEIJING,Feb.5,2013(Xinhua)-Chinese health authorities on Tuesday launched a campaign to fight against assisted reproductive technology (ART:辅助生育技术)abuse.Unauthorized ART use,surrogate motherhood and the illegal collection and supply of sperm and eggs,as well as the illegal sale and abuse of ovulation induction(诱导排卵) medicine,will be targeted.
The Ministry of Health and health department of the People's Liberation Army General Logistics Department jointly announced the campaign at a conference.Both departments also ordered all of their local branches to suspend permits for new organizations that wish to offer ART treatments.That is,new organizations will not appear recently.Official figures showed that at the end of 2012,China had 358 organizations authorized to conduct ART treatment.
The health ministry also delivered a brief statement of the country's current infertility rate(不孕率) and ART use.The infertility rate in China is now between 7 and 10 percent,the ministry said.Some 70 to 80 percent of women who are suffering from infertility can be pregnant after changing their lifestyles and receiving medical treatment.Around 20 percent of infertile couples have to resort to ART to have babies.In 2011,about 350,000 people received ART treatment and more than 60,000 infertile couples successfully had children with the help of ART,the ministry said.
ART abuse DOSEN'T include________.

A.surrogate motherhood
B.unauthorized ART use
C.the regular usage of medicine
D.the illegal supply of sperm and eggs

What does the underlined word “suspend” (paragraph 2) probably mean?

A.Support. B.Pause. C.Allow. D.Ban.

From the last paragraph we can know________.

A.Nearly10 percent of couples could not have their own babies
B.70 to 80 percent of women could not be pregnant now
C.Over 350,000 infertile couples had their babies with the help of ART
D.About one fifth of infertile couples have to turn to ART for help

What's the best title of the passage?

A.China targets ART abuse
B.ART is used in China
C.ART is illegal in China
D.China increases ART using

Growing strawberries in pots
·The best way to start growing strawberries is to buy pot-grown strawberry plants in spring:5 plants are plenty for a hanging basket and 10 for the average 13 inch-sized pot.
·Plant them immediately in soil-based compost(混合肥料) and they will produce a modest crop in their first year.The second year should see a bumper(特大的)crop,followed by a slightly lower yield(产量)the third summer.Then start again with fresh stock .
·Careful watering and feeding are essential If you are to harvest a good crop,you must never let the compost dry out, particularly when the fruit is forming and ripening;if you do.most of your crop will drop off血e bush almost immediately.
·Water well then leave the pots for up to 3 weeks,until they reach the point of drying out be careful not to overwater them during the winter months.
Pruning apple trees
·A one-year-old tree is known as a “maiden”.It has a single stem when purchased.Immediately after planting, cut it back by about half to leave 4 good buds at the base of the stem.This will force growth from the base or the plant during the summer.
·In the second year ,prune in winter by cutting all side branches back by about one-third, Make sure each cut is made cleanly just above an outward-facing bud.In the third and fourth years, new side branches will have emerged from the previous year’s growth.Cut back all these new side branches by a third, pruning to an outward-facing bud.
·By the fifth year the tree should have a well-balanced shape.From then on ,cut back all new branches by one-third in winter.Remove any diseased wood and broken branches, and ensure the centre is open to air circulation
The two pieces of advice probably appear in_________

A.a scientific repot B.a gardening guide
C.a book review D.a fashion column

A good crop of strawberries mainly depends on_________

A.the size of a pot
B.the season of harvesting
C.the number of plants in a pot
D.careful watering and feeding

Cutting back all side branches by a third is to__________

A.remove the diseased and broken branches
B.keep the whole tree open to air circulation
C.force the apple tree to grow from the base in winter
D.help the apple tree to form a well-balanced shape

The two pieces of advice suggest that planting is closely related to_______

A.season B.water C.compost D.cutting

The breaking news of Mo Yan's Nobel Prize in Literature on Thursday evening soon aroused public curiosity of the 57yearold Chinese writer: Why was it him that was favored by the Swedish Academy?
Born in 1955 into a rural family,Mo dropped out of school and became a farmer when he was a teenager.He joined the military and devoted himself to writing after the Cultural Revolution (1966-1976).
Less than half an hour after the announcement,Mo's works turned to soldout status at China's major online book sellers.One lucky buyer wrote in an online comment: “Rushed to purchase,but to my shame,I have not read any of his novels.”
Although Mo was entitled one of the top domestic literature awards before the Nobel Prize,he is not the most popular novelist in China,in either the book market or in reputation.
Mo's novel “Big Breasts & Wide Hips,” translated by Howard Goldblatt,tells a story of a mother who struggled and suffered hardship and intertwined fates with Chinese people in the 20th century.His more recent work “Frog” more directly criticized China's onechild family policy,which helped control the country's population explosion but also brought tragedies to rural residents in the past 60 years.
“I think the reason why I could win the prize is because my works present lives with unique Chinese characteristics,and they also tell stories from a viewpoint of common human beings,which is above differences of nations and races,” Mo said on Thursday evening to Chinese journalists.Mo also said many folk arts originated from his hometown,such as clay sculpture,paper cuts,traditional new yearpaintings,have inspired and influenced his novels.
With more Chinese writers like Mo,the world could learn a more real China.Perhaps,this is another reason for the Swedish Academy's choice.
What can we conclude from the second paragraph?

A.Mo's life experiences. B.Mo's family life.
C.Mo devoted himself to writing. D.Mo had a gift for writing.

What can we infer from the passage?

A.Mo didn't got any national awards before he won the Nobel Prize.
B.Mo was the top novelist in China before he won the Nobel Prize.
C.Mo's novels have attracted many people to read.
D.Mo's novels are all based on his daily life.

Which of the following have no effect on Mo's novels according to the passage?

A.Clay sculpture. B.Paper cuts.
C.Folk arts. D.Beijing opera.

According to the passage,we know that________.

A.Big Breasts & Wide Hips' leading role is one happy mother
B.Big Breasts & Wide Hips criticized China's onechild family policy
C.Frog came out earlier than Big Breasts & Wide Hips
D.Frog shows benefit as well as shortcoming of one China's policy

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