I heard many parents complaining that their teenage children are rebelling. I wish it were so. At your age you ought to be growing away from your parents. You should be learning to stand on your own two feet. But take a good look at the present rebellion. It seems that teenagers are taking the same way of showing that they disagree with their parents. Instead of striking out boldly on their own, most of them are clutching (紧握) at one another’s hands for reassurance.

    They claim they want to dress as they please. But they all wear the same clothes. They set off in new directions in music. But somehow they all end up huddled (聚在一起) round listening to the same record. Their reason for thinking or acting in thus-and-such a way is that the crowd is doing it. They have come out of their cocoon (蚕茧) into a larger cocoon.

    It has become harder and harder for a teenager to stand up against the popularity wave and to go his or her own way. Industry has firmly carved out a teenage market. These days every teenager can learn from the advertisements what a teenager should have and be. And many of today’s parents have come to award high marks for the popularity of their children. All this adds up to a great barrier for the teenager who wants to find his or her own path.  

    But the barrier is worth climbing over. The path is worth following. You may want to listen to classical music instead of going to a party. You may want to collect rocks when everyone else is collecting records. You may have some thoughts that you don’t care to share at once with your classmates. Well, go to it. Find yourself. Be yourself. Popularity will come – with the people who respect you for who you are. That is the only kind of popularity that really counts.

1.In this passage, the author wants to tell _______.

A. teenagers to try to pursue their real selves

B. readers to try to be popular with people around

C. parents to try to control and guide their children

D. people to try to understand and respect each other

2.The author disapproves of rebelling teenagers _______.

A. growing away from their parents

B. following the popularity trend

C. walking a new way on their own

D. turning to their friends for help

3.The phrase “larger cocoon” at the end of the second paragraph refers to _______.

A. the distractive and variable society

B. the dazzling music world

C. the parental care and love

D. the popularity wave in the society

4.What does the author think of advertisements?

A. Convincing.         B. Instructive.            C. Influential.       D. Authoritative.

The teaching hospital is one associated with a medical school. Teaching hospitals are large, with a range of from 300 to 200 beds. These hospitals always have interns(实习医师) and residents(住院医师) and additionally have medical students on the hospital wards. They have superb technical resources, and it is here that the most extraordinary events of medicine take place. Open-heart surgery, transplantation of kidneys, elaborate(精致的) nurseries for the newborn, support for management of rare blood diseases, and other wonderful achievements are all available here. Dozens of people may be concerned with the well-being of a particular patient. Important medical decisions are thoroughly discussed, presented at conferences, and reviewed by many personnel.

On the other hand, the quality of personal relationships at teaching hospitals is variable. Many patients feel that they are treated in an impersonal way, and that their laboratory tests receive more attention that their human and social problems. Since these institutions are on the frontier of medicine, there is a tendency to emphasize the new and elaborate procedures, when older and more modest ones might have served as well. With the inexperience of some members of the care team, there is a tendency to order more laboratory tests than what would have been ordered for the same condition in a private hospital. The sick patients are sometimes confused by having to relate to a large number of doctors and students. Medical educators are concerned with such criticisms and have to correct some of the problems. However, some excesses(超额) of technological medicine still occur in these institutions.

One of the advantages of a teaching hospital is that         .

  A. its first-class personnel are a guarantee of excellent medical care

  B. its first-class medical facilities and skills make medical breakthroughs possible

  C. the interns, residents and medical students all offer satisfactory services

 D. its laboratory staff provide high-class professional aids for the doctors

The passage implies that         .

A. private hospitals usually give personalized care of high quality

B. private hospitals have more experienced laboratory staff

C. teaching hospitals use patients as subjects for their experiments

D. teaching hospitals usually give patients improper treatment

Treatments of some difficult and complicated cases in teaching hospital are decided         .

  A. by specialists in charge of the case

  B. by doctors and students together

  C. on some special and important occasions

 D. through collective efforts and serious review

The problem that still bothers teaching hospitals frequently is         .

  A. the inadequate patient care caused by irresponsible nurses.

  B. the wrong decisions made by inexperienced doctors

  C. improper dependence on technological medicine

  D. the inconvenience caused by the presence of medical students

While there is no widely accepted definition of MOOCs, their key features are open access：they are currently free to participants, no entry qualifications are required, they support an unlimited number of participants and as yet, very few include any form of accreditation (认证).
Currently offered by some famous universities, MOOCs are attractive to people who do not have the financial resources to meet the growing costs of university education, or who do not have formal qualifications. They also allow participants to study at their own pace.
The potential for MOOCs to deliver education is obviously vast—they could be considered as a huge step forwards in widening participation. They also have the potential to provide a unique window on universities that offer popular and valuable courses, they may attract some participants to register for formal fee-paying programmes at the same or other universities and are likely to promote new ways of on-line education.
However, it is still very early days for MOOCs. The quality of the education provision is highly variable, with many courses offering only recordings of lectures, and delivery is particularly difficult in some special fields that require practical classes, research projects or extensive library access. Besides, wider engagement with participants requires very considerable resource. Even limited feedback or examination becomes a major task if there are several thousand students in the class.
Considering the challenges, some people argue MOOCs will soon evaporate (蒸发). But they certainly provide good opportunity for widening higher education, are a means of raising awareness of universities to audiences of tens or hundreds of thousands, and are well worthy of serious consideration. (271 words)

Taking a math test can be pretty stressful. Even if you know the material, you can still get the problem wrong. Knowing how to go through your math test and check your work can save you from handing in a test full of mistakes that can be avoided.   【小题1】 
Write it out
You can also check a math problem by writing everything out on paper.   【小题2】  Writing out math problems reduces your chances of missing anything to the lowest possible level, which is a common cause of incorrect answers.
 【小题3】 
Make sure your answers work by doing the opposite procedure of what your problem calls for, including the answer you got the first time around. In other words, you would use the opposite of this addition problem—subtraction (减法)—to determine whether or not your answer is the correct one.
Plugging in
You may find that a variable isn’t good enough or have a problem where you have to solve for a variable (变量).   【小题4】  This is the only real way to assure yourself that the answer you’ve found is correct.
Check for a reasonable answer
  【小题5】  For example, if you get an answer in the millions and you know it should be in the thousands, you’ve likely misplaced a point. Go back through the work on your paper to make sure all of your formulas (公式) and calculations are correct. If everything looks okay, do the problem again and compare the result of the second try to what you’ve got on the first try.

Death valley is one of the most famous deserts in the United States, covering a wide area with its alkali（碱性）sand. Almost 20 percent of this area is well below sea level, and bad water, a salt water pool, is about 280 feet below sea level and it is the lowest point in the United States.

    Long ago the Panamint Indians called this place Tomesha—the land of fire. Death Valley’s present name dates back to 1849 when a group of miners coming across from Nevada became lost in its unpleasantness and hugeness and their adventure ended with a disaster. Today Death Valley has been declared a National Monument and is crossed by several well-marked roads where good services can be found easily. Luckily the changes created by human settlement has hardly ruined the special beauty of this place.

Here nature created a lot of surprising scenes, almost like the sights on the moon, every changing as the frequent wind moves the sand about, showing the most unusual colors. One of the most astonishing and variable parts of Death Valley is the Devil’s Golf Course, where it seems hard for one to tell reality from terrible dreams. Sand sculptures（泥雕）stand on a frightening ground, as evening shadows move and lengthen.

1.The name of the valley comes from ________.

    A. an Indian name

    B.the local people

    C.a National Monument

D.the death of the miners

2. From the passage we can learn that ________.

    A. people can find gas stations, cafes and hotels in the desert

    B.no one had ever known the desert before the miners

    C.it’s still not easy to travel across the desert

D.people have changed the natural sights of the desert

3. From the passage we can see the writer ________ the Death Valley.

    A.is fearful of

    B.appreciates

    C.dislikes

    D.has never been to