Theteachers’union_________alawsuitagainstthedistrictcallingforrepairing“deplorable”schoolconditions.
A、firedB
暂无解析
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit（）whenshewastryingtogotosleep.
Thismissileisdesignedsothatonce_____nothingcanbedonetoretrieveit.
Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
U.S.News____________rankingsofcollegessince1983.Theyareaverypopularresourceforstudentslookingtoapplytouniversitycampus.
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
