题目内容：

    Leaders in the aviation （航空）industry plan to launch a campaign that they hope will work against what they call a " flight shaming（使蒙羞）” movement. They say flight shaming has weakened peopled demand for air travel in Europe . Some travelers there are increasingly concerned about the effects of flying on the environment. Activists have been calling for greater action against climate change. That includes avoiding air travel.

Flight shaming has affected air travel demand in many European countries, including Britain, France and Germany. The campaign will try to explain to the public how the industry is reducing its effect on the environment. Juniac, head of IATA, said the flight shaming movement gave off "misleading information"..

The International Air Transport Association （IATA） is organizing the plan through the Air Transport Action Group, a group of aviation industry organizations and companies. Juniac didn't say when the campaign would start, but noted that details would be available to airports and airlines.

Commercial flying is estimated to cause about 2.5% of worldwide carbon emissions（释放）. However, that number could rise as worldwide air travel increases.

The aviation industry says it has already cut carbon emissions by one-half since 1990. The improvements are mainly the result of aircraft that use fuel more effectively. The industry plans to cut emissions further by 2050. It has a goal of stopping the growth of carbon emissions by 2020.

Airlines also have warned of the harmful effects of the flight shaming movement. Some have criticized the industry for failing to explain itself Tim Clark，president of the airline Emirates，said that improvements in technology have reduced the environmental effects of passenger airplanes.

1.What is flight shaming movement about?

A.Weakening peopled demand to travel abroad.

B.Calling on all to fight against global warming.

C.Announcing the environmental harm of flying.

D.Scaring people from approaching the airport.

2.How does Juniac comment on flight shaming movement?

A.It ignores the efforts of airlines to reduce pollution.

B.Airlines will charge the movement for their loss.

C.Airlines are to blame for the cause of the movement.

D.It has positive effects in urging airlines to be green.

3.What conclusion can we draw from the fifth paragraph?

A.The effective use of fuel has made air travel greener.

B.Flight shaming movement has caused great loss for airlines.

C.With more passengers? carbon emissions by planes may rise.

D.The aviation industry aims to stop carbon emission by 2020.

4.What is the text mainly about?

A.Improvement of air quality since flight shaming. movement.

B.Opposition of aviation industry against flight shaming movement,

C.Travelers' inconvenience caused by flight shaming movement,

D.Measures by aviation industry to reduce environmental pollution.