Unit 2 Sailing the oceans Period 1 Warming Up,Prereading & Reading
时间:45分钟
Ⅰ.介、副词填空
1.The voyages of travellers before the 17th century show that they were not________the mercy________the sea even though they did not have modern navigational aids.
2.On a clear day especially during the summer the sailors could use the sun overhead________midday to navigate by.
3.There is a special cloud formation which indicates there is land close________.
4.An early method of measuring speed involved throwing a knotted rope tied________a log over the side of the ship.
5.The number of knots that were counted________a fixed period of time gave the speed of the ship in nautical miles per hour.
6.________this way the ship could set a straight course even in the middle of the ocean.
7.________, it was awkward to use as one of the points of reference was the moving ship itself.
8.As the ship rose and plunged in the waves, it was________difficult to be accurate with any reading.
9.It works________measuring the angle between two fixed objects outside the ship using two mirrors.
10.This gave the seamen the local time and allowed them to find their latitude________sea.
答案 1.at;of 2.in 3.by 4.to 5.during 6.In
【2017届高考英语(重庆专用)二轮精练:选修9 unit2 period 1】相关文章:
★ 【人教版】2014届高考英语一轮复习指导考点针对练:选修8 unit4《Pygmalion》
★ 贵州省贵阳市2014高考英语(新人教版)一轮阅读训练(22)附答案
★ 贵州省贵阳市2014高考英语(新人教版)一轮阅读训练(39)附答案
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修3 Unit 2 Healthy eating
★ 贵州省贵阳市2014高考英语(新人教版)一轮阅读训练(13)附答案
★ 重庆市2014高考英语阅读理解一轮(精品)训练题(3)附答案
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修3 unit1《Festivals around the world》
★ 2017届高考英语二轮复习书面表达限时测验:2(含解析)
★ 【北京专用】2014届高考英语一轮复习方案课时作业:选修7 Unit 1 Living well
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21