its supply of energy has run out ______

A．Solar energy will be considered as an important part of our nation's energy supply.

B．Because solar energy is in its infancy，we will build more power plants.

C．Because solar energy is in its infancy. the supply of electricity will be rationed.

D．Although solar energy is in its infancy. we don't need practice energy rationing now.

Solar energy is now in its infancy,______．

A．but it will be considered as an important part of our nation's energy supply

B．yet we will build more power plants

C．and the supply of electricity will be rationed

D．but we don't need to practice energy rationing now

ces that its aggressively looking for ways to cut energy use in its plants. At the company's annual meeting last week in Philadelphia, its Chief Executive Officer, Ben Parker outlined an ambitious set of steps that are expected to reduce energy consumption in the company's industrial kitchens up to 5% within two years. CHN Incorporated is also undertaking an initiative to cut the amount of solid waste it generates by asking all its suppliers to reduce the amount of packaging materials they use when shipping food ingredients to the company's plants.

What type of business is CHN Incorporated involved in？

A．Energy supply

B．Garbage disposal

C．Food manufacturing

D．Restaurant management

Which of the following statements can be inferred from paragraph 6？

A．If a mill wheel stops turning, it will not start again until the following year.

B．The mill wheel is temporarily a closed system during long dry periods.

C．Condensation, precipitation, run-off, and evaporation act as closed systems.

D．The Earth's heat budget is a closed system because its energy supply is limited.

All the factors can facilitate Americas growth EXCEPT that______.

A．America has reduced its financial restraint

B．balance sheets of families and firms are in good condition

C．America has inexpensive energy supply and competitive currency

D．federal government has cut costs by increasing tax and cutting spending

businesses, wood has become an alternative energy source to coal, oil, and gas. Nevertheless, wood will never supply more than a modest fraction of our continuing energy needs. Which of the following, if true, does NOT support the claim made in the last sentence in the passage above？

A．There are many competing uses for a finite supply of wood, and suppliers give the lumber and paper industries a higher priority than they give individual consumers.

B．Wood produces thick smoke in burning, and its extensive use in densely populated cities would violate federal antipollution guidelines.

C．There are relatively narrow limits to how far wood can be trucked before it becomes more economical to burn the gasoline used for transportation instead of the wood.

D．Most apartment dwellers do not have adequate storage space for the amount of wood necessary to supply energy for heating.

E．Most commercial users of energy are located within range of a wood supply, and two-thirds of United States homes are located outside of metropolitan areas.

d be added to the passage. Where would the sentence best fit？

For example, the hot tea in a vacuum bottle does not interact with the environment outside the bottle.

A closed system is isolated from its surroundings.A The energy supply of a closed system is limited and is progressively used up by the processes operating within the system.B The ability of the system to function decreases as the available energy is exhausted. Without any additional energy supplied from the outside, the system's processes cease altogether and no further change is possible in the system.C A mill wheel supplied with water from a non- refillable container is a closed system. Once the container of water is empty, the wheel no longer turns because there is no water to turn it. In a truly closed system, the water would have to be collected below the mill wheel in a second container to ensure that the system did not supply any energy to the outside.D

A．Square Ａ.

B．Square Ｂ.

C．Square Ｃ.

D．Square Ｄ.

9] Slated for completion by 2012, the 1,200-kilometer Northern European Pipeline is a $5 billion project that will pump billions of cubic meters of natural gas from Western Siberia to Germany and the rest of Europe. The project has come to symbolize Europe's growing reliance on Moscow for its energy needs. [30]The European Union buys 25 percent of its gas and 30 percent of its oil from Russia. Several E.U. members, including Slovakia and Finland, are totally dependent on Russian oil. The E.U. estimates that by 2020, three-quarters of its natural gas will be imported. The bulk will come from Russia, which has the biggest natural gas reserves in the world and a pipeline network enabling it to supply both the Far East and the West. Russia is also the world's second-largest oil producer. The Kremlin wants to build Russia's economic and political future around its energy. Through its Gazprom, Transneft and Rosneft oil and gas state-controlled monopolies and pipeline operators, Russia already commands nearly all of Central Asia's energy exports.

How long is the Northern European Pipeline？

A．2,012 kilometers.

B．2,020 kilometers.

C．1,200 kilometers.

D．1,300 kilometers.

Text2

While fossil fuels- coal,oil,gas- still generate roughly 85 percent of the world's energy

supply,it'sclearer than ever that the future belongs to renewablesources such as wind and solar.The

move to renewables is picking up momentumaround the world: They now account for more than half ofnew power sourcesgoing on line.

Some growth stems from a commitment bygovernments and farsighted Businssesto

fundcleanerenergy sources.But increasinglythestoryisabout theplummeting prices of

renewables,especially wind and solar.The cost of solarpanels has dropped by 80 percent and the

cost of wind turbines by close taone-third in the past eight years.

In many parts of the world renewable energy is already a principal energy source.In

Scotland,for example, wind turbines provide enough electricity to power 95 percent of homes.

While the rest of the world takes the lead, notably China and Europe, the United States is also

seeing a remarkable shift. In March,for the first time,wind and solar power accounted for more

than 10 percent of the power generated in the US,reported the US Energy Information

Administration.

President Trump has underlined fossil fuels - especially coal - as thepathto economic growth.

In a recent speech in Iowa, he dismissed wind power as an unreliable energy source, But that

message did not play well with many in Iowa,where wind turbines dot the fields and provide 36

percent of the state's electricity generation - and where tech giants likeMicrosoftare being

attracted by the availability of clean energy to power their data centers.

The question “what happens when the wind doesn't blow or the sun doesn'tshine？" has provid

ed a quick put-down for skeptics. But a boost in the storage

apacity of batteries is making their ability to keep power flowing around the clock more likely.

The advance is driven in par by vehicle manufacturers, who are placing big

bets on battery-powered electric vehicles. Although electric cars are still a rarity

on roads now. this massive investment could change the picture rapidly in coming years.

While there's a long way to go,the trend lines for renewables are spiking. The pace of

change in energy sources appears to be speeding up perhaps: just in time to have a

meaningful effect in slowing climate change.What Washington does-or

doesn't do- to promote alternative energy may mean less and less a time of

aglobal shift in thought.

26.The word "plummeting"(Line3,Para.2)is closest in meaning to ______

A.stabilizing

B.changing

C.falling

D.rising

27. According to Paragraph 3,the use of renewable energy in America ______

A. is progressing notably

B. is as extensive as in Europe

C. faces many challenges

D. has proved to be impractical

28. It can be learned that in Iowa,

______.

A. wind is a widely used energy source

B. wind energy has replaced fossil fuels

C. tech giants are investing in clean energy

D. there is a shortage of clean energy supply

29. Which of the following is true about clean energy according to Paragraphs 5&6？A. Its

application has boosted battery storage.B. It is commonly used in car manufacturing.C. Its

continuous supply is becoming a reality.D. Its sustainable exploitation will remain difficult. 30. It

can be inferred from the last paragraph that renewable energy _____.

A. will bring the US closer to other countries

B. will accelerate global environmental change

C. is not really encouraged by the US government

D. is not competitive enough with regard to its cost

30. It can be inferred from the last paragraph that renewable energy _____.

primary and backup oxygen sources. If the problem is not fixed, the 3-member crew would have to abort the mission. But, a Russian space official in Moscow told Reuters News Agency that only the primary generator developed trouble and that the unit was repaired by the crew. More about the latest problem on board the space station from VOA's Nick Simming.

"The U.S. Space Agency says Mir's two primary sources of oxygen have stopped working and now there is only sever- al day's supply of oxygen inside Mir's cabin. Mir's backup oxygen generating candles failed Monday just after the normal oxygen supply system used by the spacecraft unexpectedly shut down. That normal oxygen source, a method that extracts oxygen from water, had been turned off for several days to conserve energy heated and automatically shut down. NASA's spokesman Michael Brock Hais says if Mir's oxygen supply problem is not fixed soon, the two Russians and one American on board will have to abort. This problem is the most serious to plague the space station which has endured power loss, computer malfunction and even a collision with a supply vessel all in the past six months. Nick Simming VOA News, Washington."

What is the problem with Russia's space station？

A．It has lost its primary oxygen sources.

B．It has lost its backup oxygen sources.

C．It has lost both the primary and the backup oxygen sources.

D．It has lost neither the primary or the backup oxygen sources.