在发生人感染H7N9禽流感确诊病例的县(区)内，应当在病例确诊后开展为期()的强化监测
A、3天
B、7天
C、10天
D、14天
E、21天
Americanseat______vegetablesperpersontodayastheydidin1910.
A、morethantwicemany
B、astwiceasmany
C、asmanyastwice
D、twiceasmany
Iwasreallyanxiousaboutyou.You______homewithoutaword.
A、mustn’tleave
B、shouldn’thaveleft
C、couldn’thaveleft
D、needn’tleave
Mrs.Smithlockedboththefrontandthebackdoorsbeforeshewenttobed______thatsomeonemightstealintothehouseatnight.
A、so
B、forfear
C、unless
D、oncondition
WhatisIrelandcalledinIrish?
A、Irea
B、Aire
C、Eare
D、Eire