第15题: [单项选择]The woman wants to know________. A. how to sign up for a course B. how she can help the man C. how she can change her sleep rhythms D. how sleep disorders are treated 参考答案:D
第25题: [单项选择]What are the man and the woman doing A. He has sprained his left ankle. B. He has sprained his right ankle. C. He has sprained his waist. 参考答案:B
第30题: [单项选择]以下关于算法的叙述中错误的是______。 A. 算法可以用伪代码、流程图等多种形式来描述 B. 一个正确的算法必须有输入 C. 一个正确的算法必须有输出 D. 用流程图描述的算法可以用任何一种计算机高级语言编写成程序代码 参考答案:B 答案解析:一个算法应该有0个或多个输入,但是必须有一个或多个输出。