問題詳情

   The scarcity of energy resources, specifically fossil fuels, is one of the major problemsthe world (23) . Scientists have known for long that Earth has only a limited supply ofpetroleum and that unchecked use of this resource can wreak havoc on the environment, such asglobal warming. To resolve this problem, people can’t but (24) alternative energy sources,which promise to be cleaner and more abundant. One of the sources is bio-fuel. There are someadvantages to (25) energy supplies with bio-fuels. Bio-fuels are renewable, can be growndomestically, (26) unburdening nations from the need to import costly oil, and producemuch less environmentally damaging pollution. Although bio-fuels are easier to use than otheralternative energy sources, there are problems involved in producing them. Statistics indicatethat to meet the global demand, humanity must dedicate all of Earth’s forests and open spacesfor (27) purposes. In effect, to satisfy a mere 5% of the global need for diesel, nearly 60%of all soybeans (28) must be used for fuel. Another problem inhibiting the use of bio-fuelsis that growing the crops and (29) them into bio-fuels consume more energy than the fuelsthemselves will produce, by (30) 29%. It is ridiculous that we should produce bio-fuels(31) energy.
23.
(A)confronting
(B)is confronting with
(C)confronts with
(D)is confronted with

參考答案

答案：D
難度：非常困難0
統計：A(1),B(0),C(0),D(0),E(0)

內容推薦

內容推薦