【单选题】—I’ve never seen so many people here before! — ______ .
【单选题】听力原文:F: Tom, do you think that it is right for us to group people by age? I mean we put our three-year-olds together in day-care centers, our 13-year-olds in schools and sports activities, and our 80-...
A.
Put our three-year-olds together in day-care centers.
B.
Put our 13-year-olds in schools and sports activities.
C.
Put our 80-year-olds in senior-citizen homes.
D.
Mix people of all ages together.
【单选题】在使用FX2N可编程序控制器控制交通灯时,T0循环定时时间为( )。 A.550s B.23s C.55s D.20s
【单选题】乳房的描述,错误的是
B.
位于胸大肌和胸筋膜表面,内到胸骨旁线,外侧可达腋中线
【单选题】I’ve never seen many people here before.