–What’s new on the Web？--Look！An amber（琥珀）___...

–What’s new on the Web？

--Look！An amber（琥珀）______ the ancient spider’s web.

A．containing                             B．to contain

C．having been contained                   D．being contained

高三英语单项填空中等难度题查看答案及解析

My hometown has taken on a new look. ___________!

高三英语单项填空简单题查看答案及解析

In a new look at the impact of long-time sitting behavior on health, a new study links time watching television to an increased risk of death. One of the most surprising findings is that it isn’t just couch potatoes who were affected. Even for people who exercised regularly, the risk of death went up the longer they were in front of the TV. The problem was the long periods of time spent sitting still.

Australian researchers who tracked 8,800 people for an average of six years found that those who said they watched TV for more than four hours a day were 46% more likely to die of any cause and 80% more likely to die of cardiovascular (心血管的) disease than people who reported spending less than two hours a day in front of TV.

Time spent in front of TVs and computers and videogames has come under fire in studies in recent years for contributing to a spread of obesity in the US and around the world. But typically the resulting public-health message urges children and adults to put down the Xbox controller and remote and get on a treadmill (跑步机) or a soccer field.

The Australian study offers a different view. “It’s not the sweaty type of exercise we’re losing,” says David Dunstan, a researcher at Baker IDI Heart and Diabetes Institute, Melbourne, who led the study. “It’s the incidental moving around, standing up and using muscles. That doesn’t happen when we are plunked on a couch in front of a television.”

Indeed, participants in the study reported getting between 30 and 45 minutes of exercise a day, on average.The results are supported by a new field of research that shows how long periods of inactivity can affect the body’s processing of fats and other substances that contribute to heart risk. And they suggest that people can help decrease such risk simply by avoiding extended periods of sitting.”

Keeping such processes working more effectively doesn’t require constant intense exercise, but consciously adding more routine movement to your life might help, doctors say. “Just standing is better than sitting,” says Gerard Fletcher, a cardiologist at Mayo Clinic, Jacksonville, Fla., who works standing up at his computer. “When you stand up, you shuffle around a little bit and use muscles not required when you are sitting or lying down.”

Simple strategies for increasing activity include combining household chores such as folding laundry with TV-watching time or getting up to change a TV channel rather than using a remote control. The report, published Tuesday in the American Heart Association journal Circulation, focuses on TV watching in part because it is the main leisure-time activity in many countries, researchers said, especially in the US.

1.One misunderstanding people might have is that ________.

A. the radiation from TV may badly affect your sight

B. TV programs can broaden your horizons effectively

C. watching TV very long is a good way to kill time

D. regular exercise can minimize the side effect of watching TV

2.What is new about the discovery of the Australian study?

A. Remote control shouldn’t be used when people watch TV.

B. People who watch TV too long should take more physical exercise.

C. Sitting too long in front of TV will lead to high risk of heart attack.

D. Long-time sitting is bad for all people including those who exercise regularly.

3.According to the Australian study, how can the risk of death be reduced when people watch TV?

A. By increasing simple movement.

B. By totally avoiding watching TV.

C. By taking some medicine.

D. By increasing sweaty type of exercise.

高三英语阅读理解中等难度题查看答案及解析

Hello,everybody.Welcome to surf on a new Web site—SCIENCE NEWS FOR KIDS!

Our goal is to offer timely items of interest to kids,accompanied by suggestions for hands on activities,books, articles,Web resources,and other useful materials.

Our emphasis is on making the Web site attractive by offering kids opportunities to comment on and grade the subject matter,get ideas for science projects,and try out math puzzles.At the same time,we offer teachers creative ways of using science news in their classrooms.

The Science News for Kids Web site,supported by several corporations and foundations,strengthens the usefulness of Science News in the middle－school classroom and offers entertaining reading and activities for students interested in science.

A section of the Science News for Kids Web site is devoted to particular interests.At present,we have six such zones: a weekly brainteaser（难题）for those who enjoy solving and inventing puzzles (PuzzleZone),entertaining science－fiction composition exercises for those interested in writing (SciFiZone),and weekly science short description along with science project ideas and tips (ScienceFairZone).The GameZone contains a small selection of logic and memory games.The TeacherZone has materials,including question sheets related to the feature article of the week,so that teachers can bring science news topics to the classroom.The LabZone features a weekly hands on activity or science project idea.In the future,we might add additional zones,for example,for kids interested in robotics,the environment,computers,math,or veterinary（兽医的）medicine and animals.

Contact us at [email protected]. 　　 　　 Science News for Kids　　　　　 　　 1719 N Street,N.W.

Washington,DC 20036 　　　　　　　　 　　 Phone :202-785-2255 　　　　　 　　 Fax: 202-659-0365

1.Science News for Kids is a Web site mainly devoted to____.

A. introductions to the newly－published science books

B. useful teaching materials for teachers in schools

C. electronic games for those interested in computers

D. timely news for children interested in science

2.What makes the Web site an attractive one to the teachers?

A. Offering recreational reading materials in science.

B. Trying out interesting and challenging mathematical puzzles.

C. Offering opportunities to comment on and grade the subject matter.

D. Giving creative ways of using science in classrooms.

3.Which of the following messages can't you find on Science News for Kids?

A. Brazil's air traffic controllers are back at work after a 6－hour strike.

B. Taking a big bite isn't always the best strategy in this two－player game.

C. Astronomers have discovered a “family” of related objects in a region of the solar system.

D. What is one－half of two－thirds of three－quarters of four－fifths of five－sixths of 10,000?

4.Which section of the Web site is suitable to you if you have much imagination and intend to be a writer in the future?

A. PuzzleZone.　　 B. LabZone.

C. SciFiZone.　　 D. ScienceFairZone.

高三英语阅读理解中等难度题查看答案及解析

—Look! More trees are being planted around the new building. What do you think of ________natural surroundings here?

—Fantastic! Beyond _______ expression.

A. the; 不填       B. the; the    C. 不填; 不填       D. the ; an

高三英语单项填空困难题查看答案及解析

Shortly after suffering from a massive earthquake and 　　　　　 to ruins, the city took on a new look.

A. reducing 　　　　 B. reduced　　　　 C. being reduced 　　 D. having reduced

高三英语单项填空中等难度题查看答案及解析

What does the boy’s new history teacher look like?

A. She has red hair. B. she is tall. C. She is quite short.

高三英语短对话简单题查看答案及解析

With trees and grass _________39.6% of the urban area, the city of Weifang has taken on a new look.

A. covered　　　　　　 B. covering

C. to be covered　　 D. being covered

高三英语单项填空中等难度题查看答案及解析

Shortly after suffering from a massive earthquake and ________ to ruins, the city took on a new look.

A. reducing                          B. reduced                           C. being reduced                D. having reduced

高三英语单项填空中等难度题查看答案及解析

Shortly after suffering from a massive earthquake and ______ to ruins, the city took on a new look.

A．reducing          B．reduced          C．being reduced      D．having reduced

高三英语单项填空中等难度题查看答案及解析