【单选题】We all agree that computers are essential ______ the problems of increasing population.
【单选题】1岁婴儿,未接种过麻疹疫苗,3天前接触过麻疹患儿,应采取的措施是
【简答题】Which one is not essential to be a good reviewer?
【单选题】The opening ceremony is a great occasion; it is essential ______ for that.[2003]
【简答题】【T6】 A. DEPENDS B.ESSENTIAL C.DISCOURAGED A.THE CHILD GETS【T1】______ B.THIS【T2】______ON INTERACTION C.IS【T3】______TO THE GROWTH BUT SPEECH HAS TO BE INDUCED, AND【T4】______BETWEEN THE MOTHER AND THE CH...