1、.词汇知识1. a_occurring or happening every year or once a year2g_ (physics)the force of attraction between all masses in the universe；especially the attraction of the earths mass for bodies near its surface3i_ unfavorable to life or growth4e_ far from what is usual5b_ to get into a steady position witho
2、ut falling to one side or the other6r_ total amount of rain falling within a given area in a given time7d_ distance from the top down8m_ large number；involving a large number of people答案：1.annual2.gravity3.inhospitable4.extreme5balance6.rainfall7.depth8.mass.重点短语1close _靠近；接近；差不多2cut._ two 把切割分成两部分3
3、_ a.state 处于的状态4_ average 平均；按平均计算5adapt _ 使适应；适应6be made _ 由组成7be trapped _ 被困住/陷住8stand _ 突出，显眼；超出9_ foot on 踏上；涉足10keep ones _ 保持平衡11_ the form of 以的形式12_ particular 特别答案：1.to2.in3.in4.on5.to6.up of7.in8out9.set10.balance11.in12.in.必背句型1_zero，Antarctica is technically a desert.南极洲年降雨量几乎为零，严格来说该区域
4、就是一片荒漠。答案：With annual rainfall close to2_ about 14 million square kilometres around the South Pole，it is the fifth largest continent in the world.(南极洲)覆盖南极周围约1400万平方公里的面积，它是世界第五大洲。答案：Covering3_ is covered permanently in the ice cap.南极洲98%的表面被冰帽永久地覆盖着。答案：98% of the surface4Strong winds driven by grav
5、ity blow from the pole to the coastline，_ other winds blow round the coast.受地球重力影响，会有暴风从极地吹向海岸，同时也有其他方向吹来的风。答案：while5_ imagine a more inhospitable place.很难想像地球上还有比南极洲条件更为恶劣的地方了。答案：It is difficult to6Antarctica was _.南极洲是最后一块被发现的大陆。答案：the last continent to be discovered7_the British explorer James Cook cross the Antarctic Circle，but he never saw land.直到18世纪末，英国探险家詹姆斯库克才穿越了南极圈，但他却从未看到任何陆地。答案：Not until the late 18th century did温馨提示：巩固学习效果，检验教学成果。请进入“课时训练1”，指导学生每课一练，成功提升成绩。
