【简答题】In China, many people are leaving the countryside to find jobs in the cities, because the countryside is much poorer than the city, and often there isn't much work there. Services such as hospital and...
【判断题】中骨盆平面前后径正常平均值为(11.5cm)
【单选题】以下关于放射性污染的说法.错误的是( )。
B.
放射性污染按放射性损伤产生的效应,可能影响遗传因素,给后代带来隐患
C.
放射性污染的来源有:原子能工业排放的放射性废物,核武器试验的沉降物以及医疗、科研排出的含有放射性物质的废水、废气、废渣等
D.
20世纪50年代以来,人的活动使得人工辐射和人工放射性物质大大增加,环境中的射线强度随之增强,危及生物的生存,从而产生了放射性污染
【单选题】Among all his realatives, he has an especially deep for his aunt who cares for him most
【简答题】In China, many people are leaving the countryside to find jobs in the cities, because the countryside is much poorer than the city, and often there isn’t much work there. Services such as hospital and...
【单选题】There is little,_____.farming in that area and all you can see is miles of wild countryside.
【单选题】Mr. Smith has been here for only a few days, so he hasn’t left a deep impression _____ us.
【单选题】关于如何有效解释两次世界大战的起源和暴行产业的机制,战争史家一直感到()。他们发现,当落实到细节研究上时,常常()迭出。譬如马克思主义史家认为经济压力是大战的动因,但历史事实却是二战爆发在欧洲的经济上扬期,因此许多战争史家不得不有此共识:战争起源问题并非历史学专业所能解释。 依次填入括号部分最恰当的一项是()。