乌梅丸、补中益气汤均可治久泻久痢之病证，是因二方都具有涩肠同脱之功。

198. Nobody but doctors or nurses and those _____ by Dr Hu _____ to enter the patient’s room.

A．invited; is allowed

B．are invited; are allowed

C．being invited; allowed

D．invited; are allowed

反映水样中混浊程度的水质指标是（）

A.矿化度

B.浊度

C.色度

D.臭阈值

E.pH

They had a party _______ the evening of October 1. [ ]

A. in

B. at

C. on

D. /

膨胀土（岩）地段路基施工时，必须及时做好（）的砌筑，并应随挖随砌，严防渗漏。

A.蒸发池

B.天沟

C.侧沟

D.排水沟

E.渗井