【简答题】The use of fossil fuels was the highest in the 1940s.
【单选题】The of fossil fuels, with its by-product of waste gases, has been the subject of a number of treaties and acts of international institutions.
【简答题】What are the problems of fossil fuels?A. They are limited. B. They cause health and enviornmental problems. C. They are hard to exploit. D. Both A and B.
【单选题】接触网区间平面布置图的主要内容为( )。
【单选题】The burning of fossil fuels results in the pollution of the______.
【简答题】Global warming results from the burning of fossil fuels , such as petroleum products, resulting in the release of greenhouse gases into the atmosphere.
【判断题】The use of fossil fuels threatens the health of human beings and the environment.
【单选题】To compensate for the substantial decline in the availability of fossil fuels in future years, we will have to provide at least an ______ alternative energy source.
【单选题】This passage is primarily about______.
B.
the burning of fossil fuels
C.
the potential effect of air pollution
D.
the likelihood of a new ice age