“4R”原则中的renewable的含义是

It can be inferred from the passage that more people will ______.

A．use non-renewable and renewable energies

B．stick to the use of local utility as before

C．not use any renewable energies at all

D．use renewable energies for household only

It can be inferred from the passage that more people will ______.

A．use non-renewable and renewable energies

B．stick to the use of local utility as before

C．not use any renewable energies at all

D．use renewable energies for household only

Which of the following is INCORRECT?

A．Renewable energy has become the main form. of energy in the US.

B．Renewable energy include solar power, geothermal and hydropower.

C．There are still problems remaining to be solved in the use of renewable energy.

D．Renewable energy is valuable.

We must derive hydrogen from renewable sources with a view to a pure hydrogen economy.

A．Y

B．N

C．NG

We must derive hydrogen from renewable sources with a view to a pure hydrogen economy.

A．Y

B．N

C．NG

What is true about renewable energy sources such as wind and solar? A) They reduce the dependence on backup power. B) They increase the necessity for backup power. C) They are the main sources of backup power. D) They are regarded as the best back power.

Which of the following statements can be inferred from Cristof Ruhl's words?

A．Renewable energy will continue to grow fast only without government support.

B．It is almost impossible that the renewable technology becomes much cheaper.

C．Gas demand will definitely keep increasing all along in the future.

D．The usage of solar, wind and geothermal energy is closely related to a country's natural endowment.

The EUs climate chief is seeking to extend the blocs renewable energy targets, in a move apparently designed to protect the green energy sector from an intensifying attack by the gas industry. This is the first time the European commission has【C1】______the issue of official targets beyond 2020, when the current commitment—to【C2】______20% of energy from renewable sources—expires. An extension would boost the renewable energy industry【C3】______lobbying efforts by the gas industry, which is trying to rebrand gas【C4】______a cheaper "green" alternative to renewables. In its【C5】______to push this line, the gas industry has held a series of high-level meetings with senior【C6】______in the European commission and the European parliament, 【C7】______with the governments of member states. Connie Hedegaard, the climate change commissioner in Brussels, is【C8】______at the lobbying, and is determined to maintain Europes【C9】______in developing renewable energy and clean technology. "We should be looking to avoid a lock-in to fossil fuels," she said. "We should be discussing a renewable energy target for 2030. We need to have【C10】______targets. It would be one way to send a long-term price【C11】______for renewable energy—that renewable energy is not just going to stop growing after 2020." The push to extend the target is likely to be【C12】______by some member states who fought hard against the 2020 targets when they were unveiled in early 2007. Poland is known to be concerned that its heavy【C13】______on coal may attract penalties, and Italy has a history of【C14】______climate targets. An official in the department of Gunther Oettinger, the EU commissioner for energy, said no targets were【C15】______needed for later. He is also against raising the current target to【C16】______emissions from 20% by 2020 to 30%,【C17】______some member states—including the UK, France and Germany-have proposed. In its "Roadmap to 2050", the European commission【C18】______that the share of low-carbon technologies—【C19】______renewables, nuclear power, and carbon capture and【C20】______—in the electricity mix would have to rise to 75% or 80% by 2030.

【C1】

A．shifted

B．raised

C．summoned

D．advocated

Renewable Energy Sources

Today petroleum (石油)provides around 40% of the world's energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel (矿物燃料). Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable" refers to the fact that these resources are not used faster than they can be replaced.

Hydroelectric (水力发电的)power is now the most common form. of renewable energy, supplying around 20% of world electricity. China's Three Gorges Dam is the largest ever. At five times the size of the US's Hoover Dam, its 26 turbines (涡轮机)will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China's entire electricity demand.

In 2003, the first commercial power station to use tidal (潮汐的)currents in the open sea opened in Norway. It is designed like windmill (风车), but others take the form. of turbines.

As prices fall, wind power has become the fastest growing type of electricity generation-quadrupling (翻两番)worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity. Though it will be more expensive, there is more than enough wind to provide the world's entire energy needs. Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty, and are often unpopular with residents. And turbines are not totally harmless-they can interfere with radar, alter climate and kill sea birds. Scotland is building Europe's largest wind farm, which will power 200, 000 homes. The UK's goal is to generate one-fifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable.

According to the passage, which of the following is the most polluting energy resource?

A．Petroleum.

B．Coal.

C．Natural gas

D．Water.