题目内容：

    Waste heat from one of the London Underground’s lines will be used to warm over a thousand homes in the UK capital this winter. The warm air will be channeled from the Northern Line to support the London Borough of Islington’s district heating.

Named Bunhill 2,the heat network is a joint project between Islington Council, Transport for London and engineering firm Ramboll and is considered as the first of its kind in Europe. The council hopes the system will make London more self-sufficient (自给自足的) in energy, cut carbon emissions and reduce heating bills for people.Meanwhile, tube passengers on the underground can also expect cooler air.

District heating, also known as heat networks, is the supply of heat and hot water from a central source to a group of buildings. The Bunhill 2 district heating system is the second phase (阶段) of Islington Council’s Bunhill Heat and Power scheme-a heat network in Islington that was established in 2013 to warm approximately 700 homes.

The network currently channels heat created in the Bunhill Energy Centre power station into local council housing, schools and a leisure centre. Bunhill 2 will extend this network to more community buildings and a further 450 homes.

The central source of the Bunhill 2 heat network is a ventilation shaft (通风井)-a passage that is used to expel waste heat-in the abandoned (废弃的) City Road station. A heat pump designed by Ramboll will capture this extra heat from the ventilation shaft, before it is warmed to approximately 70 degrees Celsius. This will then be transferred (转移) into Islington’s heat network to supply heat and hot water to buildings.

According to the Greater London Authority, there is enough heat wasted in London to meet 38 per cent of the city’s heating demand. The expansion of district heating networks like Bunhill 2 could see this increase to 63 per cent by 2050.

“We believe that the use of large-scale heat in this way connected to urban district heating systems will play a major part in the Uk’s heating energy demand,” explained Lucy Padfield, director of District Heating at Ramboll.

“The use of heat pumps taking advantage of industrial waste heat sources is more carbon efficient than gas-fired combined heat and power, the usual source of heat for district energy schemes,” she continued. “I am convinced that with the increasing use of renewable power sources, large-scale heat pumps connected to district heating systems will play a major role in the future heating of cities in the UK.”

1.What can we learn about Bunhill 2 in London?

A.It is inspired by other cities in Europe.

B.It will be beneficial to London’s environment.

C.It can satisfy the whole city’s need for energy.

D.It is aimed at cooling the London Underground.

2.What does the underlined word “expel” in Paragraph 5 most probably mean?

A.Rely on B.Deal with.

C.Break down. D.Drive out

3.What is Lucy Padfield’s attitude towards Bunhill 2?

A.Concerned. B.Confident

C.Amazed D.Disapproving

4.What is the text mainly about?

A.London’s special way to protect the environment.

B.The development of London’s district heating network.

C.Using waste heat from the underground to warm homes.

D.Ways to deal with the London Underground’s waste heat.