题目内容
Hours of playing violent video games can affect the way the brain works, ______ damage to certain cells of brain and slowing brain activity.
A. to cause B. causing C. cause D. caused
赢在课堂名师课时计划系列答案
天天向上课时同步训练系列答案Common sense would tell us that physically active children may be more likely to become active and healthy adults.
In the United States, elementary and middle schools are advised to give students two and a half hours of physical activity a week. That is what the Centers for Disease Control and Prevention and the American Heart Association recommend. They say high schools should provide about four hours of physical activity each week.
Yet many schools across the country have reduced their physical education programs. Just this week, a study reported that lifeexpectancy has fallen or is no longer increasing in some parts of the United States. The situation is worst among poor people in the southern states, and especially women. Public health researchers say it is largely the result of increases in fatness, smoking and high blood pressure. They also blame differences in health services around the country.
In 2006, a study found that only four percent of primary schools provided daily physical education all year for all grades. This was true of eight percent of middle schools and two percent of high schools. The study also found that twenty-two percent of all schools did not require students to take any P.E.
Charlene Burgeson , a health expert says one problem for P.E. teachers is that schools are under pressure to put more time into academic subjects. Also, parents may agree that children need exercise in school. Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class.
But experts say P.E. classes have changed. They say the goal has moved away from competition and toward personal performance, as a way to build a lifetime of activity. These days, teachers often lead activities like weight training and yoga.
Some parents like the idea of avoiding competitive sports in P.E. class. Yet others surely dislike that idea. In the end, schools may find themselves in a no-win situation.
【小题1】The underlined word “expectancy” in Paragraph 3 probably means “ ”
| A．quality | B．length | C．exception | D．depth |
| A．Fatness. | B．Smoking | C．High blood pressure. | D．Health service |
| A．Physical activities are becoming more and more popular in American schools. |
| B．All the schools provided daily physical education all year for all students. |
| C．Parents think children need physical education for their bad memories. |
| D．Students spent less time on physical education for academic pressure. |
| A．P.E. is the most important subject for all students. |
| B．P.E has changed its goal for some reasons in America. |
| C．It introduces us the present situation of P.E in American schools and its cause. |
| D．P.E can help students improve their academic subjects. |
Founded in 1764 by French traders, St. Louis today is the fifteenth largest urban area in the United States. There are many attractive destinations for touists．
★American Kennel Club Museum of the Dog
Dog lovers who visit St. Louis won’t want to miss this 14,000-square-foot museum. Inside are over 500 paintings，prints, watercolors，and a variety of other dog art objects.
The Museum is open year round，Tuesday through Saturday 10 AM to 4 PM, and Sunday 1 PM to 5 PM. Admission is ＄5 for adults，＄2.50 for seniors, and ＄1 for children up to 14.
★Anheuser Busch Brewery
The Anheuser Buxch Brewery tour is not just for beer lovers．The tour includes the historic Brew House．Then the tour continues to the modern Bevo Packaging Plant. The best will be the Budweiser Clydesdale stables. The tours are always free．
★Gateway Arch
Designed by Eero Sarinen and Hannskari Bandel, it took over two years and 900 tons of stainless steel to build. It is the tallest of the country’s National Monuments. The Arch is part of the Jefferson National Expansion Memorial. About one milion people per year come to the top of the Arch, where there is an observation platform providing a great view of the city.
★The St. Louis Zoo
First version of the St. Louis Zoo opened in 1904 at the St. Louis World’s Fair, but in the century since it has grown into one of the chief zoos in the world. The passenger train takes visitors around the Zoo，which contains over 9,000 animals of over 800 species.
The Zoo is open every day but Christmas and New Year，with summer hours of 8 AM to 7 PM，and hours the rest of the year of 9 AM to 5 PM．Admission to the Zoo is free．
【小题1】If a senior high school student plans to visit American Kennel Club Museum of the Dog with his parents and his five-year-old brother，he has to pay ______．
| A．＄8.5 | B．＄12 | C．＄13.5 | D．＄16 |
| A．The St. Louis Zoo |
| B．Anheuser Busch Brewery |
| C．Gateway Arch |
| D．American Kennel Club Museum of the Dog |
| A．People can see the city clearly on the top of the Arch. |
| B．It was designed by two famous Italian architects. |
| C．It took 900 tons of stainless steel and cement to build. |
| D．It is the largest of the country ‘s National Monuments. |
| A．on New Year ‘Day |
| B．on ChristmasDay |
| C．at 5:30 p.m. in winter |
| D．at 8:30 a.m. in summer |