【简答题】阅读下列材料,回答问题. 材料一我国某海岛的天然林覆盖率在1956年为25.7%,19年降为18.7%,1981年仅为8.5%了,并且因遮蔽地面的程度大大降低,从而导致坡垒等珍稀树种濒临灭绝,有的珍贵植物已经绝迹. 材料二我国西北某县野生甘草的面积在1967年为4万公顷,30年后竟有一半被挖尽.我国的野马已经绝迹,野骆驼等野生动物也濒临灭绝. 材料三一种原产日本的林业害虫,于20世纪80年代侵...
【简答题】It may seem to be a hard task to trace back the history of rap music, though you often see the informal music associated with highly informal dance style. As far as the origin of rap music is concerne...
【简答题】简述儿童心理学的研究对象、研究内容及其意义。
【判断题】The following is academic writing.I have read your manuscript with some attention. […] I will not enter into any discussion of your principles, though you seem to desire it. At present I shall only gi...