单项选择题
When ______ why they are looking for jobs at new companies, some of them say they want more challenges. A. asked B. ask C. asking D. to ask
问答题 老年人BMI的适宜范围是在（ ）kg/m2
单项选择题 ANSYS有两种模式：一种是图形交互模式，另一个是命令流模式。 A、正确 B、错误
