A. Its new computer chip. B. Its new computer mouse. C. Its computer sensor. D. Its computer screen. 参考答案:B 答案解析:[听力原文]26-28 Apple Computer Inc. introduced on Tuesday its first computer mouse with multiple
第25题: [单项选择]Scientists believe native Americans arrived by crossing the land bridge that connected Siberia and（）more than 10,000 years ago. A. this is Alaska B. Alaska is now C. is now Alaska D. what is now Alaska 参考答案:D
第26题: [单项选择]He ______unwisely, but he was at least trying to do something helpful. A. may have acted B. must have acted C. should act D. would act 参考答案:A 答案解析:情态动 + have done用来表示对过去事实的推测，may 与 must在肯定程度有很大的区别。
第27题: [多项选择]证券公司董事会在严格遵守监管法规的基础上，根据公司( )情况确定自营业务规模、可承受的风险限额等。 A. 资产、负债 B. 现金流 C. 损益 D. 资本充足 参考答案:A,C,D 答案解析:[解析] 董事会是自营业务的最高决策机构，在严格遵守监管法规中关于自营业务规模等风险控制指标规定的基础上，根据公司资产、负债、损益和资本充足等情况确定自营业务规模、可承受的风险限额等，并以董事会决议的
