【题目】Across China, ordinary people are becoming more and more ______ of the issue of environmental protection.
A.dependent
B.ignorant
C.alike
D.aware

【答案】D
【解析】考查固定短语。句意：在中国，普通百姓正逐渐意识到环境保护问题。A. dependent依靠的；B. ignorant无知的； C. alike相似的；D. aware意识到的； be aware of意识到，为固定搭配，故选D项。