煤层产状是指煤层在地壳中的产出状态。其形状和所在空间位臵一般用产状要素来表示,包括()。
A、倾角
B、中线
C、走向
D、倾向
参考答案:A, C, D
Geography is the study of the relationship between people and the land. Geographers compare and contrast various places on the earth. But they also (51) beyond the individual places and consider the earth as a whole. The English word geography means "to describe the earth. " (52) geography books focus on a small area like a town or city. Others deal with a state, a region, a nation, or an (53) continent. Many geography books deal with the whole earth. Another (54) to divide the study of geography is to distinguish between physical geography and cultural geography. The former focuses on the natural world; the (55) starts with human beings and studies how human beings and their environment act (56) each other. But when geography is considered as a single subject, (57) branch can neglect the other. A geographer might be described as one who observes, records, and explains the (58) between places. If all places (59) alike, there would be little need for geographers. We know, however, that no two places are exactly the same. Geography, (60) is a point of view, a special way of looking at place.
54().
A.way
B.means
C.habit
D.technique
“曹冲称象”和“司马光砸缸”的故事中体现了创造性思维的作用,创造性思维的基本要求和特征是()
①敢于超越,敢于否定一切
②突破规律制约,发挥思维潜能
③以事实和规律为基础进行创新思考
④以科学理论为指导,面对实际,敢于提出新问题、解决新问题
A.①②
B.③④
C.②③
D.①④