It is good for you to take more outdoors activities.错在哪里

Just five minutes of exercise a day outdoors can improve mental health, according to a study.
Researchers from the University of Essex, UK have found that a s little as five minutes of a “green activity” such as walking, gardening, cycling or farming could help to improve mood and increase self-esteem (自信).
Many studies have shown that outdoor exercise can reduce the risk of mental illness and improve a sense of well-being, but the new study, led by Jules Pretty and Jo Barton, was the first to determine how much time needed to be spent on green exercise for the benefits to show.
Barton and Pretty looked at data from 1,252 people of different ages, genders (性别) and mental health status (情况) taken from 10 studies in Britain.
They analyzed their different outdoor activities including walking, gardening, cycling, fishing, boating, horse-riding and farming in locations such as a park, garden or nature trail (路径).
They found that the mental health changes were seen after just five minutes. With longer periods of time exercising in a green environment, the positive effects were more apparent.
Looking at men and women of different ages, the researchers found the health changes were particularly strong in the young and the mentally ill.
Green and blue
A bigger effect was seen with exercise in an area that also contained water – such as a lake or river.
“This is because historically we are drawn to water to survive and it is in our genetic (遗传的) make-up to be at one with nature,” the researchers wrote in their report.
Pretty said those who were generally inactive, or stressed, or with mental illness would probably benefit the most from “green exercise”.
“Employers, for example, could encourage staff in stressful workplaces to take a short walk at lunchtime in the nearest park to improve mental health.”
He also said exercise programs outdoors could benefit youth offenders.
小题1:How is the study this article refers to different from other studies?

A．It involved more people.

B．It took longer to finish the research.

C．It determined the exact amount of time needed.

D．It was led by just two researchers.

小题2: What can we conclude from the findings of the study?

A．Just five minutes of “green exercise” daily can help improve mental health.

B．Gardeners and farmers do not need “green exercise”.

C．Walking in a park with a lake will weaken the effect.

D．“Green exercise” is not suitable for the mentally ill.

小题3:. According to Pretty, _______ would probably benefit the most from “green exercise”.

A．stressed, inactive people	B．office workers
C．youth offenders	D．women and children

小题4: What is th e main problem discussed in this article?

A．Physical well-being.	B．Outdoor exercise.
C．Mental illness.	D．Harmony with nature.

People who are outdoors in cold weather should avoid actions like suddenly lifting a heavy basket full of snow. Even walking through heavy, wet snow can strain a person’s heart.
Many people aren’t conditioned to the physical stress of outdoor activities and don’t know the dangers of being outdoors in cold weather. Those who like winter sports can suffer accidental hypothermia if they don’t make certain preparations.
Hypothermia means the body temperature has fallen below normal. It occurs when your body can’t produce enough energy to keep the internal (内部的) body temperature warm enough. It can kill you. Heart failure causes most deaths in hypothermia.
Children, the elderly and those with heart disease are at special risk. As people age, their ability to keep a normal internal body temperature often decreases. Elderly people can suffer hypothermia without knowing they’re in danger because they can’t notice the cold conditions as quickly as the young.
Besides cold temperatures, high winds, snow and rain can also steal body heat. Wind is especially dangerous because it removes the layer of heated air from around your body. At 30 degrees Fahrenheit in a 20-mile-per-hour wind, the cooling effect is equal to calm air at four degrees. Similarly dampness (湿气) causes the body to lose heat faster than it would at the same temperature in drier conditions.
To keep warm, wear more clothes. This traps air between layers. Also, wear a hat or head scarf. Much of your body’s heat can be lost through your head. Keep your hands and feet warm, too, as they tend to lose heat rapidly.
Don’t drink alcohol before going outdoors or when outside. Alcohol makes you feel warm at first because blood vessels in the skin expand. But heat is then drawn away from the body’s important organs.
1. The underlined word “strain” in Paragraph 1 means ________.
A. injure B. warm C. control D. burn
2. What is implied in the passage about hypothermia?

A.	It means the body temperature falls rapidly.
B.	Most heart attacks are caused by it.
C.	It is not as scary as people think.
D.	It can threaten a person’s life.

3. Based on the passage, one of the reasons why the elderly are at special risk of suffering from hypothermia is that _______.

A.	they like exercising outside in cold mornings
B.	they can’t notice cold conditions if they are not told
C.	their body temperature is generally lower than young people’s
D.	their ability to keep a normal internal body temperature is not so good

4.What is Paragraph 5 mainly about?

A.	What causes the body to lose heat faster.
B.	The advantages of drier conditions.
C.	What else can steal body heat.
D.	Dangers of high winds.

5. Which of the following is NOT a result of drinking alcohol before going outdoors?

A.	Feeling warm at first
B.	The body’s heat is taken away
C.	Blood vessels in the skin expand
D.	The risk of hypothermia is reduced