Article: Antifreeze is a liquid that is added to water to keep it from freezing. When water freezes and turns to ice,it expands .The force of water expanding is so great that it will break the hardest metal.Water is used in car engines to keep them cool while they run,and if this water is allowed to freeze in winter it can break the iron block of the engine.That is why antifreeze is necessary. Water freezes at 0degC;the usual kind of antifreeze will not freeze until the temperature is-40degC.A mixture of five parts of water and four parts of antifreeze will prevent freezing at-18degC;four parts of water and five parts of antifreeze reduce this to -22degC. Alcohol is a kind of good antifreeze,but when the air is running it becomes hot and the alcohol boils away,so it must be changed very often.Most people use antifreeze that does not boil away when the engine is running.There are several chemicals that do this.One of the most popular is called ethylene glycol. Question: We use antifreeze in order to _ . Yes or no, is the answer "make the freezing point of water lower"?
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Article: Zhongshan, China Beijing is a beautiful city with a long history. There are many Travel Agency famous buildings and mystery stories here. It's a good place to Complaint telephone: go sightseeing and relax. You will have fun if you join us. 400-581-278 Best of Beijing 5 Days From Y=799 2 nights Beijing Hotel & 2 nights Changcheng Hotel Book online or call 400-581-467 www.zhongshantour.com Beijing Hotel: Close to Tian'anmen Square Prize-winning garden Bars&French restaurant Swimming pool Changcheng Hotel: Gardens with mountain views Restaurant & Cafe Buses to the downtown Departure Date Price Apr 8, 2013 Y=899 May 29, 2013 Y=999 Jun 30, 2013 Y=799 To book, choose your Preferred date Business Hours Monday~Thursday:24 hours Friday: 8:00 am~9:00 pm Weekends: 8:00 am~6:00 pm Zhongshan, China Do you like beautiful sunshine? Do you want to see blue sea and Travel Agency colorful fish? Do you want to enjoy the fresh air? Do you want to Complaint telephone: relax yourself on the beach? Come and join us! Let's go to Hainan. 400-581-258 Best of Hainan 5 Days From Y=1,566 2 nights Haitian Hotel & 2 nights Blue Sea Hotel Book online or call 400-581-620 www.zhongshantour.com Haitian Hotel: Close to Yalong Bay Delicious seafood Swimming pool Blue Sea Hotel: Five minutes' walk to the nearest beach Breakfast is free Night Club Buses to the downtown Departure Date Price Mar 6, 2013 Y=1,566 April 8, 2013 Y=1,666 May 10, 2013 Y=1,766 To book, choose your Preferred date Business Hours Monday~Thursday:24 hours Friday: 8:00 am~10:00 pm Weekends: 8:00 am~6:00 pm Question: Which of the following statements is true according to the passage? Yes or no, is the answer "You can book tickets online or make phone calls."?
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Article: We all know that exercise is good for your health. But some kinds of exercise may be better than others. Running, for example, may help to protect against heart disease and other health problems. Running may also help you live longer. Recently, researchers studied more than 55,000 adults. About a quarter of the adults have a good habit of running. The study found these runners were much healthier than non-runners. In fact, the runners lived, on average , three years longer than the non-runners. Running may be good exercise, but it can be difficult on the body. Here are commonly shared ideas among fitness experts to lower the risk of injury for people who are new to running. [?]Take it easy. Do not run too much, too soon or too fast. Most people get running injuries when they push themselves too hard. The body needs time to get used to increases in distance or speed. [?] Get good running shoes. There is no single best shoe for every runner. You should find the shoe that offers the best fit and support for your feet. More importantly, you should have a new pair of shoes every 500 to 800 kilometers. [?]Take good notes. Take time after each run to write down notes about what you did and how you felt. Look for things that happen again and again. For example, you may find that your knees hurt when you run sometimes. But perhaps you feel great when you have a rest between running days. These notes will help you make the best plan for running. Question: The passage is written to _ . Yes or no, is the answer "help runners to exercise in a scientific way"?
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