阅读理解 When people lose legs after accidents or illnesses, emergency care and

题型：同步题难度：来源：

阅读理解     When people lose legs after accidents or illnesses, emergency care and artificial limbs(假肢) often
allow them to walk again. Newts (蝾螈)in the same situation, on the other hand, can grow limbs back
their own! Scientists have known for a long time that certain animals can regrow limbs, but they haven"t
quite figured out how these creatures do it.
     Researchers have now come up with some new ideas. Their work may give people the ability to
regrow lost limbs.  The researchers started with two simple experiments: when you cut a newt"s leg at
the ankle, only the foot grows back; when you cut off a leg at the very end, the whole leg grows back.
  In both cases, the regrowth begins with stem cells.  Stem cells can develop into nearly any type of cell
in the body.
     How do a newt"s stem cells know when to grow only a foot and when to regrow a whole leg?
     This question relates to another mystery. In newt"s, a cutoff leg will grow back only if the nerve
bundle(神经束) in it also grows back, but if something prevents the nerve bundle from growing  the
stem cells at the wound won"t  regrow a new leg.
     In its study, a British team focused on a protein called nAG.  When the team prevented nerves in
a limb from growing, but added the nAG protein to stem cells in the limb, the limb still regrew. That
protein seems to guide limb regrowth. People have proteins that are similar to nAG.  Further research
into these__materials may someday help human limbs recover by themselves.1. A newt will regrow its leg if________.A. its ankle was cut off but the nerve bundle was good
B. its leg was cut off and the nerve bundle stopped growing
C. its leg was cut off and the nerve bundle could grow back
D. its ankle and the nerve bundle could grow back2. What do the underlined words "these materials"  refer to?A. Nerve bundles and proteins.
B. Proteins similar to nAG.
C. Stem cells and proteins.
D. Stem cells and nerve bundles.3. The first sentence of the passage________.A. acts as a leadin
B. shows where researchers got their new ideas
C. states the author"s opinion
D. describes the result of researchers" studies4. What"s the purpose of studying the newts?A. To find out whether newts would regrow after being cutting off.
B. To find out the similarity between human and newts.
C. To find out what is nAG.
D. To find a way of helping human limbs recover by themselves.

答案

1-4: CBAD

举一反三

阅读理解     Students will need to use all of their skills in order to understand the reading selections in Reader"s
Choice.
     _1_ These selections provide practice on employing different reading skills to get the message of the
writer. They also give students practice in four basic reading skills:skimming, scanning, reading for
thorough comprehension, and critical reading.
     Skimming involves reading quickly through a text to get an overall idea of its contents. This kind of
rapid reading is suitable when you are trying to decide if careful reading is desirable or  __2__
     Like skimming, scanning is also quick reading. However, in this case the search is more concentrated.
__3__  When you read to find a particular date or number, you are scanning.
     Reading for thorough comprehension is carefully reading in order to understand the total  meaning of
the passage. At this level of comprehension the reader is able to summarize the author"s ideas   _4_.
     Critical reading demands that a reader makes judgments about what he or she reads. This kind of
reading requires posting and answering questions such as "_5_", "Do I share the author"s point of view?"
and "Am I convinced by the author"s arguments and evidence?
A. Does my own experience support that of the author?
B. Reader"s Choice is one of the most popular magazines in the world.
C. but has not yet made a critical evaluation of those ideas.
D. The book contains many types of selections on a wide variety of topics.
E. To scan is to read quickly in order to find out specific information.
F. Do I know about the author?
G. when there is no time to read something carefully.

题型：同步题难度：| 查看答案

阅读理解     Their reunion was unlike any other.  Graduating from the Macon, Georgia,  class of 1959 gathered
together in 2009, even though many of them never had an opportunity to meet during their high school
days.
    Schools in the 1950"s, like most other public locations, were segregated (隔离)in Georgia. Kids were
forced to attend different schools depending on the color of their skin, and those with white skin were
further separated by gender. Fifty years later these people who were not allowed to associate with each
other were finally able to connect.
    It all began with the personal journey of a man named Tom Johnson. He grew up in Macon and
enjoyed a very successful career which included serving as the publisher of the Los Angeles Times and
president of CNN. Tom"s life changed drastically over the years, but he still felt the desire to reconnect
with his roots.
    In 2005 Johnson returned to Macon with his son, Wyatt. As the pair drove around town,  the father
recounted high school stories to his son. He talked about how students attended one of three schools:
BallardHudson, Lanier or Miller. Wyatt looked over at his father and said:"Dad  think about how many
friends you missed getting to know."
    Johnson thought about the people he never got the chance to meet. He decided to do something
about it.
    The first step was to find people who graduated from all three schools. Johnson wrote to each person
and proposed they all get together for a luncheon. He explained that even though they were kept apart
during their youth, they didn"t have to be separated any more. His classmates received the message with
open hearts. A reunion date was set for October.
     More than 200 former Macon students traveled hundreds of miles to reunite with people who went
to high school with them. It was an unprecedented event, former students coming together to make up
for the time they had lost during the days of segregation.1. White students in Georgia in the 1950"s could ________.   A. attend school of a single sex
B. attend school of mixed sexes
C. attend school with students of other skin colors
D. attend any school they like2. When the classmates received the message from Tom, they ________. A. were all eager for the reunion
B. were doubtful about his real purpose
C. refused to listen to him
D. all began to miss him3. We can learn from the passage that Tom Johnson ________.  A. began to miss his old school friends after he retired
B. wanted to reconnect with his roots after the dramatic         changes in his life
C. wanted to reconnect with his roots in spite of his successful career
D. began to miss his old school friends after hearing his     son"s words4. The passage mainly tells us ________.  A. the success story of Tom Johnson
B. the segregation in Georgia in the 1950"s
C. an unusual reunion of old graduates
D. the old school system in Georgia

题型：专项题难度：| 查看答案

阅读理解                                                      SELF STUDY TIPS
     However difficult you find it to arrange your time, it will pay off in the long run if you set aside a
certain part of the day for studying － and stick to it. __1__ But don"t forget to make sure that you
have enough left for recreational activities or simply to be "with" yourself: reading a novel or watching
a television programme.
     As part of your weekly schedule, it is also advisable to consider exactly what you have to do in
that week, and make sure that you handle the most significant tasks first. __2__
On a physical level, make sure you have an area or space for studying. __3_ If you always study in
the same place, preferably a room of your own, you will find it easier to adjust mentally to the activity
when you enter that area. You should have everything that you might need at hand.
     Make sure that all the physical equipment that you use, such as a desk, chair etc. is at good height
for you. If you use a personal computer, there are plenty of guidelines available from the movement on
angles, lighting and the like.   __4__
     If you are working on topic your teacher has set, but finding it hard to concentrate, it may be that
you actually need to take your mind right off it for a period of time.  __5__ After a period away from
the test, having not thought about it at all, you may return to it refreshed and full of ideas.
A. It"s wise to leave the easier or less urgent areas of your work until later.
B. It"s all too easy to read something and then forget where it came from.
C. Consult these and avoid the typical student aches and pains.
D. "Airing the mind"can work wonders sometimes.
E. Make use of equipment that is available to you.
F. It is best to make a weekly schedule.

题型：专项题难度：| 查看答案

阅读理解     Everyone has good days and bad days.
     Sometimes, you feel as if you"re on top of the world.But occasionally you feel horrible, and you lose
things and you cannot focus on your schoolwork.
     For more than 20 years, scientists have suggested that high selfesteem (自尊) is the key to success.
Now, new research shows that focusing just on building selfesteem may not be helpful.In some cases,
having high selfesteem can bring bad results if it makes you less likeable or more upset when you fail at
something.
     "Forget about selfesteem, " says Jennifer Crocker, a psychologist (心理学家) at the University of
Michigan, US, "It"s  not the important thing."
     Feeling good
     Crocker"s advice may sound a bit strange because it is good to feel good about yourself.
     Studies show that people with high selfesteem are less likely to be depressed, anxious, shy, or lonely
than those with low selfesteem.
     But, after reviewing about 18,000 studies on selfesteem, Roy Baumeister, a psychologist at Florida
State University, has found that building up your selfesteem will not necessarily make you a better person.
     He believes that violent and wicked (邪恶的) people often have the highest selfesteem of all.He also
said:"There"s no evidence that kids with high selfesteem do better in school."
     Problems
     All types of people have problems.People with high selfesteem can have big egos (自我) that can
make them less likeable to their peers (同龄人), said Kathleen Vohs, a psychology professor at
Columbia University.
     People with high selfesteem tend to think more of themselves, Vohs says.People with low selfesteem
are more likely to rely on their friends when they need help.
    What to do
     Researchers say it is best to listen to and support other people.Find positive ways to contribute to
society.If you fail at something try to learn from the experience."The best therapy (药方) is to recognize
your faults, " Vohs says."It"s OK to say, I"m not so good at that, and then move on."1. It is concluded in the research that high selfesteem________.A. is not important at all
B. has taken on a different meaning
C. may not be the key to success
D. does not help you do better at school2. According to the research, people with high selfesteem________.A. have better relationship with people of their own age
B. are more likely to become violent and wicked
C. tend to be proud and do not care much about others
D. often feel depressed and can"t focus on their work3. The advice in the last paragraph is mainly for people________.A. with high selfesteem
B. with low selfesteem
C. who are still at school
D. who are good at everything

题型：陕西省同步题难度：| 查看答案

阅读理解。 In June,2007,a group of students from eight highI"m daydaytest Placeholder!
schools in Winnipeg, the capital of Canada"s ManitobaProvince, will begin test-launching
(试发射) a satellite the size of a Rubik"s cube.
The one-kilogram WinCube 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 early 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 challeng-ing 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 andYouth
Minister Peter Bjornson. "We want to make science more relevant c相关的) ,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,"Bjornson added.
      The Win-Cube program is mainly aimed 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 world2. According to Mr. Bjornson,_______ .    A .those Manitoba high school students are worth praising
B. the study of space c an 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 students3. The primary purpose of the project is to_______. A. find the early signs of earthquakes
B. relate studies to practical experience
C. help high school students study real-world engineering
D. inspire a strong desire for discovery among the students4. The best title for this passage may be_______.A. Manitoba School
B. Win-Cube Program
C. Space Cooperation
D. Satellite Launching

题型：同步题难度：| 查看答案