[创新设计]2014-2015学年高中英语同步精练：选修9 Unit 2 Period 1（人教版，课标通用）

Unit 2 Sailing the oceans Period 1 Warming Up，Pre-reading & Reading 同步精练（人教版选修9，课标通用）

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 7．However 8.extremely 9.by 10.at Ⅱ.单词拼写

1．This was a more p________and simplified version of the astrolabe. 2．So seamen could follow the birds to land even if they were o________and in the open 时间：45分钟

sea.

3．This seems to have been the first and most useful form of e________which carried the minimum amount of risk. 4．Can you help me u________the files? 5．It was the first i________to measure the sun's position. 6．It was easier to handle because it was more p________. 7．However, it was awkward to use as one of the points of r________was the moving ship itself.

8．On a clear day especially during the summer the sailors could use the sun o________at midday to navigate by. 9．So the Vikings would observe the winds before and during their o________or return journeys.

10．Seamen used it to help i________the position of a stream or river when they were close to land.

答案 1.precise 2.offshore 3.exploration 4.update 5.instrument 6.portable 7.reference 8.overhead 9．outward 10.identify Ⅲ.翻译与仿写

1．The voyages of travellers before the 17th century show that they were not at the mercy of the sea even though they did not have modern navigational aids. 翻译：

__________________________________________________________________ 仿写：他的生命掌握在国王手中。

__________________________________________________________________ 2. There was no secure method of measuring longitude until the 17th century when the British solved this theoretical problem. 翻译：

__________________________________________________________________ 仿写：直到做完作业王林才回家。

__________________________________________________________________ 3. They could use the height of the sun to work out their latitude.

翻译：

__________________________________________________________________ 仿写：这些数字我每次相加都有不同的结果。

__________________________________________________________________ 4．This seems to have been the first and most useful form of exploration which carried the minimum amount of risk. 翻译：

__________________________________________________________________ 仿写：他好像已经知道这次考试结果了。

__________________________________________________________________ 5．Seamen used it to help identify the position of a stream or river when they were close to land. 翻译：

__________________________________________________________________ 仿写：志愿者们住得离北京大学很近。

__________________________________________________________________ 答案 1.17世纪以前的航海记录显示，即使没有现代航海技术的帮助，旅行者们也不是任凭海洋摆布的。 His life hangs at the mercy of the king.

2．直到17世纪英国人解决了这个理论问题后，人们才有了测量经度的可靠方法。 Wang Lin didn't go home until he finished his homework. 3．他们利用太阳的高度计算出他们所处的纬度。

These figures work out differently each/every time I add them.

4．这似乎已是最早的、最有用的探险方式，所冒的风险也是最小的。 He seems to have known the rusult of the examination. 5．当靠近陆地时，海员们利用它来确定小溪或河流的位置。 The volunteers live close to Beijing University. Ⅳ.语篇填词

1____navigators could____2____North Star, the sun and____3____to navigate____4____. Seaweed could also be____5____to know whether they were____6____to land. Seabirds could be used____7____show the way to land. If fog was seen seamen knew that they were near the land. Winds can____8____the

speed, but it also be____9____. Seamen used certain tides and currents to____10____ships to their destination. 答案 1.Skillful(Accomplished) 2.use 3.clouds 4.by 5．used 6.close 7.to 8.accelerate 9.dangerous 10.carry Ⅴ.单项填空

1．—Why didn't you tell him about the meeting?

—He rushed out of the room________I could say a word.

A．before B．until C．when D．after

解析 考查连词before表示“……还没来得及……就……”的用法。句意：我还没来得及说一句话，他就冲出了房间。 答案 A

2．—How often do you________the dictionary when you are doing reading? —Not very often. Only when I find it is necessary. A．relate to C．refer to

B．consult to D．look up

解析 refer to the dictionary查阅词典。relate to涉及，关系到；consult to不是固定用法；look up查阅，应用作look up a word in a dictionary。 答案 C

3. He got well-prepared for the job interview, for he couldn't risk________the good opportunity. A．to lose C．To be lost

B．losing D．being lost

解析 句意：他为面试做好了准备，因为他不能冒失去这个好机会的风险。risk doing sth冒险做某事。 答案 B

4. But someday, all our hard work will________； we will attend the university of our choice and go on to have a great career. A．turn out

B．pay off