胸部增强CT不用于以下病变的诊断（）

A.发现肺门淋巴结

B.纵隔淋巴结肿大

C.肺内结节性病变的区别

D.肺血管性病变

E.胸水性质的判断

__________ , some students tend to develop a range of unhealthy habits .

A．Parents don’t watch over them

B．Not having watched over

C．With no parents to watch over them

D．Parents watched over