抑制胃酸分泌作用最强的药是A．组胺 B．法莫替丁 C．苯海拉明 D．阿司咪唑 E．西

Declaring that physical exercise is one of the most powerful medicines to help improve our quality of life is not an exaggeration. The World Health Organization expressed the same view in its 2002 World Health Report, emphasizing that the damage produced by lack of physical activity was equal to the p probability of serious illness such as heart disease and even some kinds of cancer.

Those who have embraced an active lifestyle for years are familiar with the sort of physical and psychological benefits that come from exercise. Nevertheless a lot of people would never think of physical activity as a way of feeling better, simply because they don’t think they are in need of it, or because they are lazy or maintain that they haven’t got enough time.

There are many positive effects that result from physical exercise and they are not only concerned with the physical aspects but also psychological and social ones.

Beginning with the physical benefits, physical activity improves the life of the heart, burns off fat, lowers high blood pressure, makes tissues more resistant, and increases muscle flexibility and joint mobility.

On a psychological level, physical activity helps reduce anxiety and stress by causing tension to disappear and by encouraging us to have a better sense of ourselves through listening to our bodies during movement.

Lastly, seeing ourselves in better health is advantageous socially. The sense of satisfaction thus obtained will result in an increase of self-respect and self-confidence in terms of our ability to interact with others.

The benefits linked to exercise have also not gone unnoticed in the business world, with more and more companies setting up gyms on-site. Employees’ improved health translates into better performance and reduced costs as well as an increase in people’s satisfaction in the work place.

Physical activity is recommended for all age groups, including children. It is an important growth factor in a child’s education.

And for the elderly There is no doubt that regular physical activity allows greater efficiency in daily life as well as creating more basic independence day by day, including the possibility of keeping in touch with others and not feeling isolated.

Physical exercise is socially beneficial because ()

A. it gives people competitive advantage

B. it helps people reduce anxiety

C. it enables employees to work better for their company

D. it makes people confident in dealing with others

新建矿井、生产矿井新掘运输巷的一侧，从巷道道碴面起（）m的高度内，必须留有宽0.8m综合机械化采煤矿井为1m以上的人行道，管道吊挂高度不得低于1.8m；巷道另一侧的宽度不得小于0.3m综合机械化采煤矿井为0.5m。

A、1.6

B、1.7

C、1.8

党的十七届三中全会指出，推进农村改革发展，关键在（）。

A、党

B、干部

C、农村基层组织

D、群众

发色金属在不同的烧制气氛中发色相同.

划线的划针伸出夹紧位置以外（）水平位置夹紧划针，防止松动

A、宜长

B、宜短

C、不宜太长

D、不宜太短