第1题: [单项选择]Halley made his discovery ______. A. by doing experiments B. by means of his own careful observation C. by using the work of other scientists D. by chance 参考答案:C 答案解析:本题属对细节信息的深层理解推断题。其关键词是made．．，discovery。Halley的discovery是基于对comets that had been observed by scientis
第14题: [单项选择]2012年5月第27题适合编辑录音片段的工具软件是（）。 A. CoolEdit B. Authorware C. Photoshop D. 3dsMax 参考答案:A 答案解析:CoolEdit是数字音频处理工具软件，Authorware是多媒体应用软件创作工具，Photoshop是数字图像处理工具软件，3dsMax是三维动画建模工具软件。
A. he lost his self-confidence B. he was mentally slow C. his teacher had no confidence in herself D. his parents expected too much of him 参考答案:A 答案解析:判断题。根据为文章第三段的这句话：He accepted their mistaken estimate of his ability，felt that it was useless to try，
第20题: [单项选择]This is a very difficult operation. It is essential that you ______ for emergency. A. are to be prepared B. would prepare C. be prepared D. must be prepared 参考答案:C 答案解析:[解析] 考查知识点：虚拟语气的用法。在It is essential引导的从句中，谓语动词应该用should+动词原形，should可以省略。译文：这个手术很难，你有必要做好应付紧急情况的准备。
