_____
　　

A.an extra large sauna and steam room can be used for players to relax in. 　　
B.The cardiovascular system gets a work out as the heart must pump harder and faster to move blood to the surface for heat exchang
C.The Japanese, Greeks, Turks and Russians as well as Native Americans have forms of the sweat bath in their bathing rituals. 　　
D.The body's core temperature usually rises a 1-2 degrees while in the sauna, thus imitating a slight fever. 　　
E.Pregnant women should not take saunas, particularly in the first three months. 　　
F.A few people today say that the smoke sauna, "savusauna", is the only true sauna experience and that all saunas should have at least a background odor or smok

进入题库练习

参考答案: F

你可能感兴趣的试题

1 单选题 1.00分

Deforestation and Desertification(沙漠化)
　　The Sahel zone lies between the Sahara desert and the fertile savannahs(热带大草原)of northern Nigeria and South Sudan. The word sahel comes from Arabic and means marginal or transitional ,and this is a good description of the semi-arid(半干旱) lands, which occupy much of the Western African countries of Mail, Mauritania, Niger ,and Chad.
　　Unfortunately, over the last century the Sahara desert has steadily crept southwards eating into once productive Sahel lands. United Nations surveys show that over 70 percent of the dry land in agriculture use in Africa has deteriorate dover the last 30 years. Droughts have become more severe, the most recent lasting over twenty years in parts of the Sahel region. The same process of desertification is taking place across southern Africa as the Kalahari desert advances into Botswana and parts of South Africa.
　　One of the major causes of this desert advance is poor agricultural land use, driven by the pressures of increasing population. Overgrazing一 keeping too many farm animals on the land一means that grasses and other plants cannot recover, and scarce water supplies are exhausted. Over cultivation一 trying to grow too many crops on poor land一 results in the soil becoming even less fertile and drier, and beginning to break up. Soil erosion (侵蚀) follows, and the land turns into desert.
　　Another cause of desertification is loss of tree cover. Trees are cut down for use as fuel and to clear land for agricultural use. Tree roots help to bind the soil together, to conserve moisture, and to provide a habitat for her plants and animals. When trees are cut down, the soil begins to dry and loosen, wind and rain erosion increase, other plant species die, and eventually the fertile top soil may be almost entirely lost, leaving only bare rock and dust.
　　The effects of loss of topsoil and increased drought are irreversible. They are, however, preventable. Careful conservation of tree cover and sustainable agricultural land use have been shown to halt deterioration of soils and lessen the effects of shortage of rainfall. One project in Kita in south-west Malifunded by UNDP has involved local communities in sustainable management offorest, while at the same time providing a viable(有活力的)agricultural economy. This may be a model for similar projects in other West African countries.
文章{1~5)

The Sahel zone is an area which _____.

A.is covered with sad and grass
B.has a long history
C.occupies much of South Nigeria
D.belongs to Sudan

2 单选题 1.00分

What is the situation about the desertification in Africa?

A.The deserts are replaced with grasslands
B.The deserts are expanding
C.the deserts are moving northwards
D.the deserts are being deserted

3 单选题 1.00分

The word "deteriorated" in paragraph2 means _____.

A.deepened
B.suffered
C.slipped
D.worsened

4 单选题 1.00分

What is the root cause of desertification?

A.poor farming
B.overpopulation
C.radical climate change
D.disappearance of rare plant species

5 单选题 1.00分

In order to prevent desertification, the author proposes _____.

A.making good use of international aids
B.developing a sustainable agricultural economy
C.gaining international support
D.converting agricultural land into forest

卫生A题库

_____

你可能感兴趣的试题

历年真题

章节练习

考前押题

模拟试题

相关试卷

收藏本站

Ctrl+D

下载App

微信扫一扫打开

回到顶部