内容正文:
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学练优八年级英语下(WY)
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Period I[
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[.短文还原。(有一个为多余选项)
The tide is the regular rise and fall of ocean level.1.
It is
considered a good source of green energy to produce electricity in
coastal areas.
2.
Bays()and river mouths are usually perfect places to
build them,
To build a tidal power station,we need to build a dam().In the
dam,there are many turbines(涡轮机)and on each turbine,there is an
electric generator().When the tide rises,water comes through the
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dam,the turbines turn and the electric generators work,producing
electricity.When the tide falls,water goes out through the dam,the
turbines turn again.3.
Tidal energy has its advantages.Using tidal energy to produce
electricity is much cheaper than using traditional energy.4.
As long as there are the sun,the earth and the moon,we can use it to
produce electricity.Also,with the development of modern technology,
tidal energy can be stored and used to produce electricity continuously.
5.
It is difficult to build a dam in the sea,and the cost is
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very high.Besides,it's expensive to keep a tidal power station in its
best condition.Scientists are working on them.
A.People used clean energy many years ago.
B.The electric generators continue to work.
C.However,we still have some problems to solve.
D.Tidal energy can be used nearly 24 hours a day.
E.It is caused by the sun,the earth and the moon.
F.To make use of tidal energy,we need to build tidal power stations.
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Ⅱ.任务型阅读。(1至4题每题答案不超过3个单词,5题须用完
整句子回答。)
Greenland,a part of Denmark,is the world's largest island.It
covers
over two million square kilometres.Most of its land is
covered with ice and snow all year round.This makes the island look
white everywhere.Even in summer,the weather just gets a little
warmer.Only a few places near the sea lose their ice.
The people living here are mostly Inuit(因纽特人).They have
lived on this cold island for thousands of years.They know well how
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to get along with the cold environment.It is too cold to grow crops
here,so they catch fish from the cold seas and hunt for food.In the
past,they made warm clothes from animal fur.These clothes helped
them keep off the cold wind.They also built houses with ice blocks.
These ice houses were surprisingly warm inside.The outside temperature
could drop to -30C,but the inside stayed comfortable.Now,many
Inuit live in modern houses.But they still keep some old skills.For
example,when they go out for a few days to hunt,they can build small
ice shelters(庇护所).These shelters keep them safe from the cold.
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Greenland's cold nature has shaped both its beautiful views and
the Inuit's life.It shows how people can live in harmony with the
environment if they understand and respect it.
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1.Greenland is covered with
all year round,
2.Although it's summer,the weather just gets a little
in
Greenland.
3.The Inuit in Greenland can't grow crops because the island is
4.From the passage,we know the Inuit keep their old skills like building
even when living in modern houses.
5.Do you think people should understand and respect nature?Why
or why not?
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