Question

【题目】 (2009·湖北) As there is less and less coal and oil, scientists are exploring new ways of making use of __________ energy, such as sunlight, wind and water for power and fuel.

A. primary

B. alternative

C. instant

D. unique

Answer 1

【答案】B

【解析】考查形容词词义辨析。句意：既然煤和石油都越来越少，人们只好使用一些其他可替代这些燃料的东西。alternative有“可选择的，可替代的”之意，符合句意。primary“首要的，初期的”；instant“立即的；迅速的"；unique“独特的”。