It is imperative that students _____ their term papers on time.
A
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患者男,40岁,2周来右侧咬物不适,冷水引起疼痛,近2日来夜间疼痛,影响睡眠,并引起半侧头痛,疼痛不能定位,检查右侧上、下磨牙面均有深的龋洞。对患牙的应急处理为
_____yourtimelyadvice,Iwouldneverhaveknownhowtogoaboutthework.
LastMarchthe__________ofa19thcenturycargoshipwasfoundbyanunderwaterarchaeologicalteam.