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.

1.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

2.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

3.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

A popular saying goes, “Sticks and stones may break my bones, but words will never hurt me.” However, that’s not really true. Words have the power to build us up or tear us down. It doesn’t matter if the words come from someone else or ourselves— the positive and negative effects are just as lasting.

We all talk to ourselves sometimes. We’re usually too embarrassed to admit it, though. In fact, we really shouldn’t be because more and more experts believe talking to ourselves out loud is a healthy habit.

This “self-talk” helps us motivate ourselves, remember things, solve problems, and calm ourselves down. Be aware, though, that as much as 77% of self-talk tends to be negative. So in order to stay positive, we should only speak words of encouragement to ourselves. We should also be quick to give ourselves a pat on the back. The next time you finish a project, do well in a test, or finally clean your room, join me in saying “Good job!”

Often, words come out of our mouths without us thinking about the effect they will have. But we should be aware that our words cause certain responses in others. For example, when returning an item to a store, we might use warm, friendly language during the exchange. And the clerk will probably respond in a similar manner. Or harsh (刻薄的) and critical language will most likely cause the clerk to be defensive.

Words possess power because of their lasting effects. Many of us regret something we once said. And we remember unkind words said to us! Before speaking, we should always ask ourselves: Is it true? Is it loving? Is it needed? If what we want to say doesn’t pass this test, then it’s better left unsaid.

Words possess power: both positive and negative. Those around us receive encouragement when we speak positively. We can offer hope, build self-esteem (自尊) and motivate others to do their best. Negative words destroy all those things. Will we use our words to hurt or to heal? The choice is ours.

1.The main idea of the first paragraph is that _________.

2.There is no need for us to feel embarrassed when we talk to ourselves because _________.

3.The underlined part in the third paragraph means that we should also timely ________.

4.The author would probably hold the view that _________.

5.In which column of the newspaper can you most likely read this passage?

Shishmaref, an Eskimo village on an island off northwestern Alaska, is falling into the ocean. Giant storm waves have so hit the place—once well buffered by sea ice—that villagers voted in 2002 to leave their ancestral home for the mainland. They are being called one of the first refugees（难民）of global warming. k+s-5#u 

“We tend to describe climate change in terms that are abstract—a one degree rise in temperature, an increase in greenhouse gases—but when waves wash away a village, that’s concrete and very emotional,” says Igor Krupnik, an expert at the National Museum of Natural History. “When they lose a piece of their land, they aren’t just losing a certain number of square miles. They are losing part of their history and their memory. They are losing childhood events and grandparents’ tales.”

Before temperatures began to rise in Shishmaref about 30 years ago, 20 to 30 miles of hard sea ice protected the village from powerful fall storms. But the natives say the ice doesn’t freeze as solidly or as soon as it used to and now stretches only six or seven miles, leaving the community of 600 people more exposed. Storms have swept houses into the ocean.

The villagers’ plan is to move to Tin Creek, a site on the Alaska mainland 12 miles away, and they have received $180 million from the government. Residents hope that in their new community they’ll be able to maintain their close ties, continue hunting animals, and keep fishing, much as their ancestors have done for centuries. “People are asking why the government should be spending so much money on so few people,” said a government official. “But people in Alaska are like everyone else. We want to help keep their culture alive.”

The underlined word “buffered” probably means “______”. k+s-5#u 

       A．protected  B．destroyed  C．prevented  D．damaged

From the passage what do we know about the sea ice around the village in the past?

       A．It was very thin and easily broken.

       B．It was very thick and smooth.

       C．It frozen more solidly and sooner.

       D．It frozen more slowly and solidly.

According to the passage, _____ caused the village to be in danger of disappearing.

       A．water pollution        B．global warming             

       C．air pollution            D．human’s actions

What’s the villagers’ main purpose to rebuild the community?

       A．To live more happily       B．To earn money

       C．To avoid being washed away   D．To keep their culture alive

In June, 2007, a group of students from eight high schools in Winnipeg, the capital of Canada’s Manitoba province, will begin test-launching (试发射) a satellite the size of a Rubik’s cube.

The one-kilogram Win-Cub satellite, named for its home city and its shape, will be put into low orbit. Once in space, it can perform for a few months or up to several years, communicating information that could help find the signs of earthquakes.

There are 80 similar satellite projects worldwide, but this is the first high-school based program of its kind in Canada. 30 Manitoba high school students are having a hand in designing and building the satellite, in cooperation with aerospace (航空航天的) experts and 10 students from the University of Manitoba, and with support from two other organizations.

The Win-Cube project is not something that goes on a piece of paper; it is real-world engineering, allowing high school students to have an opportunity to learn more about the exciting world of engineering through their participation in this challenging program. It is also taken as a wonderful example of the unique partnerships within Manitoba. Designing, building and launching a satellite with high-school participation will bring this world-class educational project into reality and Manitoba closer to space

 “These Manitoba high school students deserve congratulations for their enthusiasm, innovation (创新), and a strong love for discovery,” said Education, Citizenship and Youth Minister Peter Bjomson. “We want to make science more relevant, interesting and attractive to high school students by showing them how classroom studies can relate to practical experience in the workplace or, in this case, in space,” Bjomson added. 

The Win-Cube program is mainly named at inspiring a strong desire for discovery on the part of the students. It also shows Manitoba’s devotion to research and innovation and the development of a skilled workforce—all important drivers of knowledge-based economic growth.

1. According to the passage, the Win-Cube satellite is        .

  A. named after Manitoba and its shape               

B. intended for international communication

  C. designed like a Rubik’s cube both in shape and size 

  D. challenged by university students around the world

2. According to Mr. Bjomson,        .

  A. those Manitoba high school students are worth praising

  B. the study of space can be practically made in classrooms

  C. Manitoba high schools are famous for the study of space

  D. scientific research is too far away from high school students

3. The primary purpose of the project is to        .

  A. find the early signs of earthquakes            

B. relate studies to practical

  C. help high school students study real-world engineering

  D. inspire a strong desire for discovery among the students

4. Which of the following statements is WRONG?

A. In Canada there are 80 similar satellite programs in all.

B. These students will have an opportunity to learn more about engineering through the project.

C. These high school will have a strong love for discovery and be interested in science.

D. This Win-Cube program is very successful in Canada.

5. The best title for this passage may be        .

A. Manitoba School                          B. Win-Cube Program

C. Space Co-operation                         D. Satellite Launching