試題詳解

74 Which of the following is true about helping protect the environment?
(A) Austria and France have announced their plans to use electric air travel by 2030.
(B) Sweden and Denmark have enacted bans on short-haul domestic flights.
(C) Airplanes are predicted to double their CO2 emissions by 2050 if left unchecked now.
(D) In the United States of America, the government is also pushing to reduce CO2 emissions through clean-energy transportation.