As the pace of life continues to increase, we are fast losing the art of relaxation. _______ you are in the habit of rushing through life, being on the go（忙碌）from morning till night, it is hard to _______. But relaxation is _______ for a healthy mind and body.

Stress is a（n）_______ part of everyday life and there is no way to _______ it. In fact, it is not the bad thing that it is often supposed to be. A _______ amount of stress is important to provide motivation and give _______ to life. It is only when stress gets out of control that it can lead to poor performance and _______ health.

The amount of stress a person can bear _______ very much on the individual. Some people are not afraid of stress, and such a ________ is obviously chief material for managerial responsibilities. Others lose heart at the ________ of unusual difficulties. When exposed to stress, in whatever form, we ________ both chemically and physically. In fact we make a choice between ________ and fight. And in more ancient days the choices made the ________ between life and death. The crises we meet today are ________ to be so extreme, but however little the stress, it requires the same response. It is when such a reaction ________ long, through continued exposure to stress, that health becomes ________. Such serious conditions as high blood pressure and heart disease have ________ links with stress. Since we cannot ________ stress from our lives we need to find ways to ________ it.

So what do you think of stress? What is your way to deal with it?

   Researchers are placing robotic dogs in the homes of lonely old people to determine whether they can improve the quality of life for humans. Alan Beck, an expert in the human-animal relationship, and Nancy Edwards, a professor of nursing, are leading the animal-assisted study concerning the influence of robotic dogs on old people’s depression, physical activity, and life satisfaction. “No one will argue that an older person is better off being more active, challenged, or stimulated (刺激), ”Edwards points out. “The problem is how we promote that, especially for those without friends or help. A robotic dog could be a solution.”

In the study, the robotic dogs, called AIBO, are placed for six weeks in the houses of some old people who live alone. Before placing AIBO in the home, researchers will collect data for six weeks. These old people will keep a diary to note their feelings and activities before and after AIBO being placed. Then, the researchers will study the data to determine if it has inspired any changes in the life of its owner.

“I talk to it all the time, and it responds (回应) to my voice,” says a seventy-year-old lady. “When I’m watching TV, it’ll stay in my arms until it wants to go down. It has a mind of its own.”

The AIBOs respond to certain orders. The researchers say they have some advantages over live dogs, especially for old people. Often the elderly are disabled and cannot care for an animal by walking it or playing with it. A robotic dog removes exercise and feeding concerns.

“At the beginning, it was believed that no one would relate to the robotic dog because it is metal and not furry,” Beck says. “But it’s amazing how quickly we have given up that belief.”

“Hopefully, down the road, these robotic pets could become a more valuable health helper. They will record their masters’ blood pressure, oxygen levels, or heart rhythms. AIBOs may even one day have games that can help stimulate older people’s minds.”

   Searching for airfares often seems like a game that passengers are bound to lose.

Prices change from day to day, even minute to minute. Looking through various websites for the best deal can be a big challenge. Even when you do book, there’s no guarantee that you are going to get the best price.

“You just don’t know when to pull the trigger. It’s not like buying anything else I can think of,” said George Hobica, founder of Airfarewatchdog. com.

Harriet Levy paid $ 179 for a recent round-trip flight on American Airlines between New York and Fort Lauderdale, Florida. Sitting just one row behind her, Shirley Harrison paid $ 215. A few rows back, Ellis and Dianne Traub paid $ 317 each. There were at least 12 fares on the flight, ranging from $ 169 to $ 360.

“There’s no reason for it,” Harrison said.

Fares can vary significantly in just a few hours. One Delta flight from New York to Los Angeles jumped from $ 755 to $ 1,143 from a Friday to Saturday in late April, and then fell to $ 718 on Sunday.

The flight was one of a dozen the Associated Press（美国联合通讯社）followed over three months for a vacation between July 16 and 22. The number one finding: avoid booking tickets on weekends. It’s the most expensive time to buy.

There’s no way to guarantee the best fare. But before booking, travelers should pay attention to this additional advice:

● Book on Tuesday, Wednesday and Thursday. That’s when airlines most often offer sales.

● Buy in advance, but not too early. The best time is four to six weeks before traveling. In general, prices for any given flight are the highest when tickets are booked eight to ten weeks and two to three weeks in advance.

● Make use of social media. Airlines are giving more benefits like exclusive（专有的）sales to travelers who interact（交流）with them on Twitter and Facebook. Those specials are often gone within hours.

● The so-called discount airlines — JetBlue, Air-Tran, Southwest and Frontier — adjust their fares less frequently than other airlines, so you can feel more confident that the price will stay the same. But their prices aren’t always the lowest. Researching multiple airlines’ fares is the only way to get a good deal.

Nowadays, more and more senior three students have mental health problems and it's hard for them to get rid of them. Why?

   So let’s say that you’re sitting at a restaurant and when your food arrives, you take one bite and decide that something is preventing you from taking a second bite. No matter what the reason is, this dish is going back to the kitchen, and now it’s up to you to find a way to send it back politely.

First of all, the single most important thing to do when you’re sending something back is to do it immediately. If you eat half the dish before sending it back, the server and kitchen will believe that you really don’t need to send it back.

If a dish is too salty that it cannot be eaten, you should first let the server know what the situation is, and they’ll take it back to the kitchen and bring you a new one. Remember that it is not the server’s fault, so don’t take it out on them. Also, don’t be afraid that they’ll get angry at you, or someone will spit (吐) in your food. It’s their job to make sure that you’re satisfied, and if the kitchen clearly makes a mistake the server will be frustrated with the kitchen, not with the diner who has been served an inedible meal. A new dish will be cooked, and nobody’s going to spit in it.

There is, however, one example when you are sending back a dish which will really annoy both the server and the kitchen. If you order a pasta dish that contains pancetta but then send it back to the kitchen because you’re a vegetarian (素食者) and don’t know what pancetta is, and then congratulations because you’re one of the most unbearable types of customers a restaurant can have. A perfectly good plate of food is just thrown out because you don’t ask what pancetta is before ordering.

So the bottom line: Use common sense if you think that you need to send your dish back. If the kitchen do something wrong, then they’re on the hook for a new plate of food. If you do something wrong, then hopefully you’ve learned a lesson.