(课件网) 认知·探索 基础自主初探 认知·探索 课堂要点探究 演练·评估 知能达标演练 6.overhead adj.在头上 7.nowhere adu.无处 8.tide n.潮；潮汐 9.knot n.结 10.magnetic adj.磁的；有磁性的 11.awkward adi.难使用的；笨拙的 12.precise adj.准确的；精确的 13.portable adj.轻便的；手提的 14.mercy n.仁慈，宽恕>merciful adj.仁慈的 l5.exploration n.探险，探测→explore v.探索 工.根据词性及汉语意思写出正确的单词 1.latitude n.纬度 2.voyage n.航海：航行 3.alongside pre力.靠着，沿着 4.minimum adj.最小的；最低的 5.horizon n.地平线，视野 l6.secure adj.安全的，可靠的→security n.安全 l7.reference n.参考→refer.参考 l8.simplify ut..单一化，简单化→simple adj..简单的 →simplification n.简化 l9.tendency n.趋向，倾向>tend v.趋向 20.reliable adj.可靠的，可信赖的→rely u.依靠，依赖 most useful form of exploration B.about the skills and navigational aids early seamen used while sailing the oceans C.the finding of latitude and longitude is a must to plot a ship's position on a map how the early sailors used their skills and simple instruments 2.How many traditional methods used by seamen are mentioned in the passage A.Four. B.Five. C.Eight. D.Ten. 3.The passage doesn't tell us whether skilled seaman used to use the to judge his position at sea. A.North Star B.sun C.moon D.stars
