20、Books don’t grow on trees

       A local community college professor decided to fight back. “The price of books for our students is just getting higher and higher and, combined with the rising cost of tuition, it’s killing these kids,” said Peter Jason, Ph.D. “Remember, students are one of the poorest groups of people in America. Almost half of them have at least one part-time job. In fact, one of my students has three jobs. She is a part-time sales clerk at a clothing store three days a week, then works three evenings a week as a pizza cook, and on weekends she does manicures(修指甲) at a beauty salon. And she still manages to have a high GPA （grade point average）and go to school full-time.”

       Textbook prices are traditionally high. Adding to that problem, many college instructors change textbooks year after year; they either upgrade to a new edition or switch to an entirely different textbook. This further hurts students because if an instructor no longer uses a particular textbook, that book has no resale value.

       Dr. Jason decided to make life a little easier and a lot cheaper for his students by writing his own book on public speaking. “Many books have an increased price because of bells and whistles: CD-ROMs, lots of color photographs, and lots of graphics. I talked to my students, and many of them, like me, prefer to keep things simple. So, during a sabbatical a few years ago, I wrote my own textbook. I made sure that it wasn’t long-winded. I called it Successful Public Speaking: How To Be Brief, Concise, and to the Point.

       “Compared to most other public speaking books, mine is half the number of pages, and one-third the price. That is, $30 instead of $90. Plus, it is published in a three-ring binder format. So, when I wrote a second edition last year, students only had to buy the 35 new pages and delete 35 of the original pages. For only $7.00, they had upgraded to the new edition. I’ve had great feedback from my students about this loose-leaf concept. Maybe the word will get out, and more writers and publishers will try it.”

1．The reason why some students have to work is that         .

       A．they have to support themselves

       B．the cost of living is rising rapidly

       C．they lack the money for their education

       D．a high GPA is required for further studies

2．More money is spent on textbooks because            .

       A．publishers pay more to the writers

       B．students need textbooks with pictures

       C．textbook prices are traditionally high

       D．textbooks may be changed every year

3．Dr. Jason wrote his own textbook to              .

       A．make it short                                       B．increase its price

       C．make it easy to update                          D．add CD-ROMs and photos

4．It can be inferred from the passage that             .

       A．a college professor objects to writing textbooks                     

       B．instructors don’t use particular textbooks any longer

       C．more writers and publishers will write shorter textbooks

       D．the loose-leaf concept is well received among the students

18、Only when you stay and live with    local people for a period of time will you have

      better understanding of life here.

A．a; /         B．the; a           C．/; the           D．the; the

17、We spent 16 glorious days in August        the athletes’ joys and tears, and we were amazed at their ability.

A．shared         B．to share         C．sharing         D．share

16、There you can see beautiful tall buildings on       side of the square.

A．all         B．either        C．both          D．every

15、If a computer crashes, you will lose the file you           on unless you save it regularly.

A．are working          B．work           C．will work            D．worked

14、Each of us,          old or young, is a valuable member of society.

A．however        B．whenever           C．whoever          D．whatever

13、We         last night, but we went to appreciate the flowerbeds and streetlights in Tiananmen Square instead.

A．might study         B．could study     C．should have studied     D．must have studied

12、In September 2008, China’s key milestone in space travel       when Zhai Zhigang conducted the first space walk.

A．reached        B．was reached         C．has reached          D．had been reached

11、This is a city which lives for today while     by its past.

A．surround        B．surrounding         C．surrounded          D．to surround