Plans have been proposed ___ the largest dam ...

Plans have been proposed ______ the largest dam in the world to be built along the Congo river.

A．of               B．with              C．for               D．on

高三英语单项填空中等难度题查看答案及解析

Plans have been proposed ___ the largest dam in the world to be built along the Congo river．

A．of                                   B．with

C．for                                  D．on

高三英语单项填空中等难度题查看答案及解析

Plans have been proposed ________ the largest dam in the world to be built along the Congo River.

A．of　     B．with

C．for　     D．on

高三英语单项填空中等难度题查看答案及解析

Two­thirds of the world's major rivers have now been disrupted with more than 50,000 dams in an attempt to　 store water and provide power.In the US，there are more than 85,000 dams，disrupting large and small rivers，and in most cases transforming natural flow.The most famous of these，the Hoover Dam，constructed in the 1930s，is mainly responsible for the fact that the Colorado River no longer reaches the ocean.

Dams，besides all their attractive benefits，also have negative impacts.Creating a reservoir means a large area must be flooded.Communities may lose their land，houses and culturally important sites.

Environmentally，the new reservoir can be a paradise for wildlife，especially birds；however，it can cause greenhouse gas emissions and poison the water.Also，the dramatic rise and fall of water levels during dam releases is too extreme for plants and animals to cope with，resulting in dead zones around the shores of reservoirs.Fish that lay their eggs in the shallows，for example，may find a few hours later that those sites are high and dry.

Downstream(在下游方向)of a dam，the flow may be reduced so that farmers cannot irrigate their fields.Many rivers run through national borders，which may cause conflict over precious water.Disputes have been continuing between India and Pakistan，and Turkey，Syria and Iraq，for example.

Dams don't just block the flow of water.They also prevent fish migrations，and dams are a barrier to sediment(沉淀物)flows.Instead of rushing downriver，sediments get backed up against the dam wall，which causes the reservoir level to increase over time.However，sediments which are rich in nutrients have become a problem.The fertility of the entire system can be influenced，with soils lost during seasonal rains not being replaced.

Perhaps the biggest problem can be seen in deltas，which are sinking into the oceans.Groundwater is being extracted to feed the city，causing the city to sink，and sediments washed away by the ocean are no longer being replaced.The result is that sea level rises in cities from Shanghai to Alexandria.

1.The Hoover Dam is mentioned in the passage in order to show________.

A．dams play an important role in our life

B．dams have impacted the flow of the rivers

C．dams make people lose their land and houses

D．dams have many benefits as well as side effects

2.What effects does creating a reservoir have on people's life?

a．People will see fewer birds on the sides of the rivers.

b．Farmers will have less water to irrigate their fields.

c．Visitors can't visit some cultural relics any more.

d．More conflicts and wars over water will break out.

e．More kinds of fish will become extinct in future.

A．a，c　    B．c，e

C．b，e　    D．b，c

3.With many dams built across the rivers，fish ________.

A．will find more places to lay their eggs

B．will face a dangerous habitat

C．will be fed on more sediments rich in nutrients

D．will find it easier to deal with the rise of water

4.How can dams influence large cities like Shanghai?

A．Their entire system will be influenced.

B．The rainy season will last longer.

C．They will lie below sea level in future.

D．Rich soils will be washed away.

5.What does the passage mainly talk about?

A．Environmental loss of dams.

B．Cultural loss of dams.

C．Economic gain of dams.

D．Environmental benefits of dams.

高三英语阅读理解中等难度题查看答案及解析

Valcamonica has one of the largest collections of rock drawings in the world. There have been about 200,000 figures and symbols carved into the rocks over a time period of approximately 8,000 years. Valcamonica's pictures show various scenes and are connected through common themes like magic, war, navigation and agriculture.

The rock drawings discovered in Valcamonica were the first prehistoric symbols of their kind recognized anywhere in the world. UNESCO first recognized the drawings in 1979 when about 140,000 were discovered, however, since then many more have been uncovered.

These drawings are spread all across the valley. The carvings began to taper off during the Iron Age and fewer appeared after that. The last period has been attributed to (归功于……)  the Camunni people. Still there are drawings that have been identified as being from the 19th century. Many of these were created using the technique of engraving (雕刻).

Some of the figures discovered in Valcamonica have been superimposed (叠印) without any order, but in most cases they appear in logical orders and also explain the relationship between each picture or symbol to tell a story.

The first known modern report of the rock carvings was in 1909 when Walther Laeng happened upon two decorated rocks in Capo di Ponte. Scholars only took interest in the drawings in the 1920s. More rocks with engravings were soon found in the areas nearby and research into their history began. In the 1930s comprehensive study campaigns were undertaken.

It was after the Second World War that the cataloging and mapping of the engravings began. This task was taken up by various teams of experts from Italy and other countries that were led by Laeng. In 1955 preservation work on the rocks began.

In 1968, a large series of conferences were held where scholars from all over the world met to discuss the rock drawings, which give us some idea of what various societies of the past might have been like.

1.What do we know about Valcamonica's pictures?

A. They tell a long whole story.

B. They are interrelated in some ways.

C. They were carved 8,000 years ago.

D. They were first discovered in 1979.

2.The underlined part “taper off” in Paragraph 3 can best be replaced by “_____”.

A. turn up　　 B. go up　　 C. die out　　 D. stand out

3.What is Paragraph 5 mainly about?

A. The history of the rock drawings.

B. The features of the rock drawings.

C. The discovery of the rock drawings.

D. The formation of the rock drawings.

4.Studies of the rock drawings _____.

A. show us the development of art

B. started after the Second World War

C. were conducted by scholars from UNESCO

D. help us know something about societies of the past

高三英语阅读理解中等难度题查看答案及解析

We began to open to the outside world in the late 1970s.________,there have been great changes in the country.

高三英语单项填空简单题查看答案及解析

We began to open to the outside world in the ate 1970s. ________,  there have been great changes in the country.

A．As a result of       B．As a result         C．First of a11        D．After all

高三英语单项填空中等难度题查看答案及解析

Many people have been talking about the way in which the world will come to an end in 2012. Everybody wants to find out if December 21, 2012 is the last day of the earth. The rumor has already been spreading for a very long time. The Mayan’s prediction can account for the rumor. According to the rumor, the earth will experience dramatic changes in 2012 and the changes will be disastrous to all of the living creatures on earth. It is widely assumed that a Planet X will return to orbit the solar system. The return of Planet X will have a destructive effect on the solar system as well as on some planets including the Neptune, the Jupiter and the earth. Planet X will cross into their orbits. There’s a possibility that Jupiter will change into a little sun at this time, so folks will be well placed to see two suns in the sky in 2012.

The solar flares (耀斑) that occur in a 11-year cycle will reach their highest point in 2012. The powerful solar flares will affect the magnetic field of the earth and cause disasters. On December 21, 2012, the sun and the earth will line up in the same line at the equator(赤道). The winter solstice(冬至) only occurs once every 25,800 years. The events in the universe are signals that the world will come to an end. As a result of the solar flares, lots of disasters will happen that will destroy the face of the whole earth. Scientists are making the guess primarily based on the Mayan Long Count Calendar.

Many films have been made about the end of the world including End Game by Alex Jones and End Clock: Nostradamus 2012. The former provides insights about the way the world will become one state. After the world government is in place, it’s going to be easy to exterminate 80% of the people in the world. The rest will continue to live with assistance from advanced technology.

No one knows whether the world will end on December 21, 2012: There is no clear answer until the day arrives. Just as the Mayans claim, it will not be the time for the world to end. Instead, it will be the dawn of a fresh start.

1. What is the passage mainly about?

A. Information about end-of-the-world predictions.

B. Different opinions about end-of-the-world predictions.

C. Some doubts about end-of-the-world predictions.

D. Destructive effects of the end of the world.

2.Which of the following things will NOT happen if the end of the world really happens?

A. Humans will see two suns at the same time.

B. The earth will look completely different.

C. The earth and the moon will line up in the same line.

D. The solar flares will become stronger than before.

3.The underlined word “exterminate” in Paragraph 3 probably means “__________”.

A. save              B. kill             C. help             D. rule

4.What is the author’s attitude to the rumor that the world will end?

A. Optimistic    .       B. Sad.             C. Unconcerned.     D. Scared.

高三英语阅读理解中等难度题查看答案及解析

Chinese car makers have narrowed the quality gap with their foreign rivals in the world’s largest vehicle market to the smallest level in seven years, according to research.

But the improvements have not been enough to see an obvious drop in the market share for local car companies this year, raising questions about their ability to be global competitors.

The annual quality survey of China’s car market by J.D. Power, a Californian market research company, tracks the number of mechanical and design problems reported per 100 vehicles by more than 21,000 Chinese drivers.

It documented 131 problems per 100 domestic(国内的) vehicles, compared with 95 per 100 foreign vehicles. The 36-point gap was the narrowest in the study’s seven-year history. When China overtook the US as the world’s largest car maker in the 2009, the gap between domestic and foreign cars was 145 points. “It’s evidence to the improvements that domestic brands have been making,” said Geoff Broderick, head of J.D. Power’s operations. “By 2018 the domestic and the global brands will be equal in terms of quality.”

Despite the steady improvement in quality, local vehicle makers have been performing poorly this year. According to the China Association of Automobile Manufacturers, domestic brand’s share of the market for cars—not including SUVs—has fallen from about 25 percent to 20 percent.

“Chinese customers are very picky in the world because they have been trained to distrust products,” said Mr Broderick, citing scandals(丑闻) affecting baby milk powder and toys.

“They go into a situation expecting there could be quality issues, whereas in the West we trust the brands.

1.What was the gap between Chinese vehicles and foreign vehicles in 2016?

A. 131 points.        B. 145 points.        C. 95 points.        D. 36 points.

2.The data in the fourth paragraph shows that ________.

A. the market share of the domestic cars has dropped

B. the quality of domestic vehicles have been improved

C. China’s cars have many mechanical and design problems

D. J.D. Power has done many surveys in the past seven years

3.J.D. Power is ________.

A. a name of a company

B. a car maker

C. a head of an association

D. a milk brand

4.According to what Mr. Broderick said in the last two paragraphs, we can learn that ________.

A. Chinese car market will be optimistic as is expected

B. Chinese and western consumers have different attitudes to products

C. he doesn’t like Chinese customers because they don’t trust products

D. it is easier for China’s car companies to sell cars to the West

高三英语阅读理解中等难度题查看答案及解析

—Will you accept his proposal?

—Me?____．He is the last man in the world I want to marry．

A．not likely      B．not really     C．not exactly       D．not nearly

高三英语单项填空中等难度题查看答案及解析