Question

    Whenever I hear a recording of John Denver singing “Sunshine on My Shoulders”， I find myself smiling, drawn to a love of the sun and the outdoors I’ve had for years as a Michigan native. Walking barefoot to the lake, playing without shirts in the sunlight, and breathing fresh air feel good. As a doctor I can tell you they are also good for your heart.

Studies have found higher rates of high blood pressure among people with the lowest sun exposure. One reason may be due to nitric oxide (一氧化氮), a gas whose function is activated when your skin is exposed to the sun’s rays. It reduces both heart attack and stroke risks. Vitamin D, which sunlight helps your body produce, is also linked to better health. So walk outdoors for 15 to 30 minutes daily.

In Japan, walking through forests to keep healthy has become a popular practice. Apparently they want to enjoy the fresh air. But research on 280 volunteers found that people had a reduced heart rate, and lower blood pressure when they walked through a forest than when they spent time in an urban area.

One of the consequences of modern society is that rarely is our body in direct contact with the ground. The earth has an electrical current. Direct contact with it may be stabilizing force for good health. Although “earthing” or “grounding” is considered alternative by mainstream medicine, research shows that the practice seems to be able to reduce heart disease risks.

So, walk around barefoot wherever possible, let your backyard grass tickle your feet, and dig your toes into sandy beaches.

1.The first paragraph is meant to ________.

A.show the author likes the song very much

B.put forward the argument of the passage

C.suggest that the author loves nature crazily

D.indicate the author is a Michigan native

2.Sunbathing is good for heart because _______.

A.the sun’s rays make nitric oxide work

B.sunlight can help people keep warm

C.the sun’s rays can help replace vitamin D

D.vitamin D reduces blood circulation

3.It’s believed that walking through forests can ________.

A.make people popular B.help breathe in fresh air

C.reduce blood pressure D.help escape noisy cities

4.The best title of the passage should be ________.

A.Nitric Oxide Has Magic Functions

B.Walking Barefoot Builds the Body

C.Sunbathing is Good for Health

D.Outdoor Activities Benefit the Heart

Answer

1.B

2.A

3.C

4.D

【解析】

本文是一篇议论文。作者通过叙述自己的经历、感受和一些研究发现，告诉人们户外活动有益于心脏。

1.推理判断题。根据第一段Whenever I hear a recording of John Denver singing “Sunshine on My Shoulders”， I find myself smiling, drawn to a love of the sun and the outdoors I’ve had for years as a Michigan native. Walking barefoot to the lake, playing without shirts in the sunlight, and breathing fresh air feel good. As a doctor I can tell you they are also good for your heart.可知，每当我听到约翰·丹佛(John Denver)演唱《阳光照在我肩上》(Sunshine on My Shoulders)的录音时，我就会情不自禁地微笑起来。作为密歇根本地人，我多年来一直热爱阳光和户外活动。光着脚在湖边散步，在阳光下不穿衣服玩耍，呼吸新鲜空气的感觉很好。作为一名医生，我可以告诉你，它们对你的心脏也有好处。结合下文内容，由此判断出作者写这段的目的是为了提出文章的论点，即该段最后一句中的“they are also good for your heart”。故选B项。

2.细节理解题。根据第二段One reason may be due to nitric oxide (一氧化氮), a gas whose function is activated when your skin is exposed to the sun’s rays. It reduces both heart attack and stroke risks.可知，原因之一可能是一氧化氮，当你的皮肤暴露在阳光下，一氧化氮的功能就会被激活。它可以降低心脏病发作和中风的风险。由此可知，日光浴对心脏有好处是因为阳光能激活一氧化氮的功能。故选A项。

3.细节理解题。根据第三段第三句But research on 280 volunteers found that people had a reduced heart rate, and lower blood pressure when they walked through a forest than when they spent time in an urban area.”可知，但对280名志愿者的研究发现，当人们在森林中行走时，他们的心率和血压都比在城市中行走时要低。所以人们普遍认为穿过森林可以降低血压。故选C项。

4.主旨大意题。根据全文内容，尤其是第一段中的“As a doctor I can tell you they are also good for your heart.”户外活动对你的心脏也有好。及最后一段“So, walk around barefoot wherever possible, let your backyard grass tickle your feet, and dig your toes into sandy beaches.”所以，尽可能的光着脚到处走，让你后院的草挠你的脚，把你的脚趾伸进沙滩。可知，这篇文章的最佳标题是“户外活动有益于心脏”。故选D项。