题目

 Because he was __________ the new limit, he was stopped and wanted for speeding.        A. good at                    B. tired from                C. unaware of               D. uninterested in 答案：C陆地动物对多变环境能及时做出反应是因为他们普遍具有发达的感觉器官感觉器官和神经系统神经系统．