问题
单项选择题
维持机体体液平衡的主要器官是
A．肾
B．肝
C．肺
D．皮肤
E．缓冲系统
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
维持机体体液平衡的主要器官是
A．肾
B．肝
C．肺
D．皮肤
E．缓冲系统
参考答案：A
从方框中选择最佳选项完成对话，有两项多余。
A: Are you Mr Smith? B: __1__ A: I'm a policeman. Your neighbor, Ms Taylor, was killed last night. B: __2__ What can I help you? A: I need to ask you some questions. __3__ B: I was on my way home from work. A: So were you working before 9 o'clock? B: __4__ Then I went to the supermarket at about 8:15. A: Were you shopping from 8:15 to 9:00? B: Yes, I was. A: OK. __5__ B: You're welcome. |