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高中英语阅读理解科技类三
Imagine ， one day ，getting out of bed in Beijing and being at your office in Shanghai in only a couple of
hours，and then， after a full day of work ， going back home to Beijing and having dinner there ．
Sounds unusual， doesn't it? But it's not that unrealistic ，with the development of China ’highs —speed
railway system ． And that connect the
’ s nota11． China has an even greater high — speed railway plan — to
country with Southeast Asia ，and eventually Eastern Europe ．
China is negotiating to extend its own high -speed railway·network to up to 17 countries in 1 0 to 15 years ，
eventually reaching London and Singapore ．
China has proposed three such projects． The first would possibly connect Kunming Singapore via
with
Vietnam and Malaysia ．Another could start in Urumqi and go through Kazakhstan and Uzbekistan ，and possibly
to Germany ． The third would start in the northeast and go north through Russia and then into Western Europe ．
If China ’ s plan for the high-speed railway goes forward ，people could zip over from London to Beijing in under two days ．
The new system would still follow China be able to
speed’highrailway—standard ．And the trains would
go 346 kilometers an hour ， almost as fast as some airplanes．
China ’ s bullet train(高速客车 )， the one connecting Wuhan to Guangzhou ， already has the World ’ s fastest average speed．It covers 1,069 kilometers in about three hours ．
Of course， there are some technical challenges to overcome． There are so many issues that need to be
settled，such as safety，rail gauge( 轨距 )，maintenance of railway tracks ．So，it ’ s important to pay attention to every detail ．
But the key issue is really money ． China is already spending hundreds of billions of yuan on domestic railway expansion ．
China prefers that the other countries pay in natural resources rather than with capital investment． Resources from those countries could stream into China to sustain development ．
It ’ 11be a win -win project. network
For other countries ， the railway
will definitely create more
opportunities for business ， tourism and so on，not to mention the better communication among those
countries ．
For China ， such a project would not only connect it with the rest of Asia and bring some much-needed
resources， but would also help develop China ’．s Wefar westforesee that in the coming decades ， millions of
people will migrate to the western regions empty and resources unused ．With high-speed
， where the land is
trains， people will set up factories and business centers in the west once and for a11 ． And they ’ 11 trade with
Central Asian and Eastern European countries ．
67． China ’ s new high-speed railway plan will be a win-win project because ． A ． China will get much-needed resources and develop its western regions B． China and the countries involved will benefit from the project in various ways
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C． China will develop its railway system and communication with other countries
D． the foreign countries involved will develop their railway transportation ，business and tourism 68 ． According to the passage ， the greatest challenge to the new high-speed railway plan is
．
A ． technical issues B ． safety of the system
C． financial problems D ．maintenance of railway tracks
69． Which of the following words best describes the author s high
railway plan?
A ． Critical ． B． Reserved．
C．Doubtful
D. Positive ．
70． Which of the following might be the best title for the passage? A ．New Railway Standards B ．Big Railway Dreams
’ s attitude towards-speedChina ’
C．--
— speed Bullet Trains D ． International Railway Network
High --
B
Have you ever noticed the color of the water in a river or stream after a heavy rainfall? What do you think caused
this change in color? It is soil that has been washed into the river from the riverbank or from the nearby fields ．
Components of Soft
Soil is made up of a number of layers(
having its own distinctive color and texture
layer is known as the litter
like a blanket, limiting temperature changes and reducing water loss
层 )， each ． The upper
． It acts ． The
topsoil layer is made up of small particles of rock mixed with rotten plant and animal matter called humus( 腐殖
质 )，which is black and gives the topsoil its dark color ． This layer is usually rich in nutrients ，oxygen ， and
water． Below the topsoil is the subsoil ， a layer that contains more stones mixed with only small amounts of
organic matter ． This layer is lighter in colour because of the lack of humus ． Beneath the soil lies a layer of bedrock．
Soil forms from the bottom up ．Over time bedrock is attacked by rain, wind ，frost, and
snow ．It is gradually broken down into smaller particles in a process called weathering ． Plants begin to grow ， and rotten materials
enrich the topsoil ． Most of the soil in Eastern Canada, for example, was formed from weathered rock that was
exposed when the ice disappeared l2, 000 years ago．
Water Beneath the Soil
Surface water collects and flows above the ground in lakes, ponds, and rivers ．Once in the soil or rock ，it is called groundwater ．Gravity pulls groundwater through the soil in a process called percolation( 渗透 )．Eventually
the water reaches a layer called the water table． Under this is bedrock through which water cannot percolate ．
As water percolates downward ， it dissolves organic matter and minerals from the soil and carries them to
deeper layers． This causes a serious problem because plants require these nutrients for
growth.
Soil pH
Soil can be acidic, neutral, or basic ．The pH of the soil is determined by the nature of the rock
from which it was formed, and by the nature of the plants that grow and rot in it ．
The acidity of rain and snow can lower the pH of the groundwater that
． By burning
enters the soil fossil fuelhigher of i
such as coal， oil gasoline， humans have been s levels acidity n many and contributing to
soils． When fossil fuels are burned, gases are released into the air and then fall back to earth as acid rain ．Acid
increases the problem carryinnutriento lower is
levels ． As nutrients are removed，
soil of g ts soil less soil
fertile ． Plants grow more slowly in acidic soil ， and also become easily attacked by
diseases．
67． The layer of soil that provides necessary nutrients for plant growth is called ．
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A ．1ittB． tops er oil C． humus D． subsoil 68． According to the text ．which of the following is
NOT true?
A ．Soil forms from weathered rock on the earth surface ．
B ．The deeper layer of soil is darker in color than the surface soil ．
C．Air pollution is partially responsible for acid soil ．
D ．Groundwater tends to carry away nutrients for plant growth ．
69． We can infer from the passage that the water
table lies ．
A subsoil layer． between the topsoil layer and the B bedrock
．in the subsoil layer above
CD． in the bedrock layer beneath the
70．minerals from ． between the subsoil layer and bedrock The underlined word “ dissolve is ”used to express the idea that organic matter and subsoil
are A ．
river． rushed away into the C water． destroyed and carried away by B． cleaned and purified by water
Dof it
． mixed with water and become part
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soil
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67 .B
D
68 .C
69. 70 .B
67． B 68． B 69． C 70． D
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高中英语阅读理解科技类三
