PALO ALTO, California------"Switching off the television may help prevent children from getting fatter------ even if they do not change their diet or increase the amount they exercise," US researchers said last week.
　　A study of 192 third and fourth graders, generally aged eight and nine, found that children who cut the number of hours spent watching television gained nearly two pounds(0.9kg) less over a one-year period than those who did not change their television diet.
　　"The findings are important because they show that weight loss can only be the result of a reduction in television viewing and not any other activity," said Thomas Robinson, a pediatrician(儿科专家) at Stanford University.
　　"American children spend an average of more than four hours per day watching television and videos or playing video games, and rates of childhood being very fat have doubled over the past 20 years," Robinson said.
　　In the study, presented this week to the Pediatric Academic Societies‘ annual meeting in San Francisco, the researchers persuaded about 100 of the students to reduce their television viewing by one-quarter to one-third.
　　Children watching fewer hours of television showed a significantly smaller increase in waist size and had less body fat than other students who continued their normal television viewing, even though neither group ate a special diet or took part in any extra exercise.
　　"One explanation for the weight loss could be the children unstuck to the television may simply have been moving around more and burning off calories," Robinson said.
　　"Another reason might be due to eating fewer meals in front of the television. Some studies have suggested that eating in front of the TV encourages people to eat more," Robinson said.
【小题1】The author tries to tell us in the first two paragraphs that ________.

Putting Movies on Mobiles

Movies in the theater get their recognition at awards ceremonies such as the Oscars．But how about movies for phones? They are getting their turn at MoFilm — the first mobile film festival.
The first MoFilm competition received 250 entries from more than 100 countries．Entries were restricted to films that were five minutes or less in length — ideal for viewing and sharing on mobile phones．An independent jury then selected a shortlist of five film-makers．The winner was chosen from the shortlist by an audience voting using their phones.
New Platforms
The awards highlight the increasing impact that mobile phones are making in the entertainment industry．Many grassroots filmmakers start out with short films．They are thwarted by the lack of opportunities to screen their work．Therefore, mobile phones are increasingly being seen as a new platform for these short works.　　
It is a good place for anyone who wants to express themselves and find a way to have that expression be seen by a wide audience．Just think about how many people have mobile phones in the world!
New Technology Advances
MoFilm is pioneering content for mobile and online services that is a world away from Hollywood．The majority of films made for mobiles are now short in length, taking into account the screen size．However this could be overcome as technology advances.
In the near future, longer films will likely be seen on the mobile phone．And there are mobile companies creating phones where users can watch movies at higher quality．
Wherever you see movies, one thing is certain: the quality of work, the simple ability at story telling, and the thing that inspires someone to tell a story can really come from anywhere.
60．At the first MoFilm, ________．  
A．movies in the theater got their recognition
B．more than 100 countries took part in the competition
C．ideal films were five minutes or less in length
D．the winner was chosen by experts’ voting
61．They are thwarted by the lack of opportunities to screen their work．The underlined word means “________”．
A．disappointed           B．surprised                    C．frightened             D．encouraged
62．Nowadays the majority of films made for mobiles are short in length because of ________．
A．online services       B．the mobile phone          C．technology advances      D．the screen size                  

The government-run command post in Tunis is staffed around the clock by military personnel, meteorologists and civilians. On the wall are maps, crisscrossed with brightly colors arrows that painstakingly track the fearsome path of the enemy.

　　What kind of invader gives rise to such high-level monitoring? Not man, not beast, but the lowly desert locust(蝗虫). In recent months, billions of the 3-inch-long winged warriors have descended on Algeria, Libya, Morocco and Tunisia, blackening the sky and eating up crops and vegetation. The insect invasion, the worst in 30 years, is already creating great destruction in the Middle East and is now treating southern Europe. The current crisis began in late 1985 near the Red Sea. Unusually rainy weather moistened the sands of the Sudan, making them ideal seedbed for the locust, which lays its eggs in the earth. The insect onslaught threatens to create yet another African famine. Each locust can eat its weight (not quite a tenth of an ounce) in vegetation every 24 hours. A good-size swarm of 50 billion insects eats up 100,000 tons of grass, trees and crops in a single night.

　　All ﹩150 million may be needed this year. The U.S. has provided two spraying planes and about 50,000 gal. of pesticide. The European Community has donated ﹩3.8 million in aid and the Soviet Union, Canada, Japan and China have provided chemical-spraying aircraft to help wipe out the pests. But relief efforts are hampered by the relative mildness of approved pesticides, which quickly lose their deadly punch and require frequent replications. The most effective locust killer dieldrin has been linked to cancer and is banned by many Western countries and some of the affected African nations. More than 5 million acres have been dusted with locust-killing chemicals; another 5 million will be treated by the end of June.

　　On May 30, representatives of Tunisia, Algeria, Libya, Morocco and Mauritania will meet in Algiers to discuss tactics to wipe out the ravenous swarms. The move is an important step, but whatever plan is devised, the locust plague promised to get worse before the insects can be brought under control.[来源:Zxxk.Com]

1.The main idea of the first sentence in the passage is that ______.

　 A. the command post is stationed with people all the time.

　 B. the command post is crowded with people all the time.

　 C. there are clocks around the command post.

　 D. the clock in the command post is taken care of by the staff.

2. The favorable breeding ground for the locust is ______.

　 A. rich soil.                               B. wet land

　 C. paces covered crops and vegetation        D. the Red Sea

3. People are alert at the threat of the locust because ______.

　 A. the insects are likely to create another African famine.

　 B. the insects may blacken the sky.

　 C. the number of the insects increases drastically.

　 D. the insects are gathering and moving in great speed.

4.Which of the following is true?

　 A. Once the pesticides are used, locust will die immediately.

　 B. Relief efforts are proved most fruitful due to the effectiveness of certain pesticides.

　 C. Dieldrin, the most effective locust killer, has been widely accepted in many countries.

　 D. Over 10 million acres of affected area will have been treated with locust-killing chemicals by the end of June.

5. The purpose for affected nations to meet in Algiers on May 30 is ______.

　 A. to devise anti-locust plans.

　 B. to wipe out the swarms in two years.

　 C. to call out for additional financial aid from other nations.

D. to bring the insects under control before the plague gets worse.

　 Most American students go to traditional (传统的) public schools. There are about 88, 000 public schools all over the US. Some students attend charter schools.

　　　 Charter schools are self-governing. Certain companies operate (经营) some charter schools. They are similar in some ways to traditional public schools. They receive tax money just as other public schools do. Charter schools must prove to local or state governments that their students are learning. These governments provide the schools with the agreement called a charter that permits them to operate.

　　　 Charter schools are different because they do not have to obey most laws that govern traditional public schools. Each school can choose its own goals and decide what to teach and how to teach them in their own way. Class size is usually smaller than in traditional public schools.

　　　 The government strongly supports charter schools as a way to re-organize public schools, which are failing to educate students. But some education unions are against charter schools. One teachers’ union has just released the results of the first national study, which compared the progress of students in both traditional schools and charter schools.

　　　 The results of the study show that charter school students performed worse on math and reading tests than the students in traditional public schools.

　　　 Some experts say the study is not fair because students in charter schools have more problems than students in traditional schools. Other education experts say the study results would make charter school officials realize that they should help their students make greater progress.

67. If a company wants to operate a charter school, it must ______.

　 A. try new methods of teaching B. prove its management ability

　 C. obey the local and state laws　　　 　　　　　　　 D. get the government’s permission

68. What’ s the government’ s attitude toward charter schools?

　 A. Doubtful. B. Supportive. C. Satisfied. 　 D. Unclear.

69. What can we learn from the text?

　 A. More students choose to attend charter schools.

　 B. Charter schools are better than traditional schools.

　 C. Students in charter schools are well educated.

　 D. People have different opinions about charter schools.

70. What might be the best title for the text?

　 A. Charter schools in America

　 B. Public schools in America

　 C. Schools in America

　 D. Education in America