The Greatest Mystery of Whales
The whale is a mammal - warm-blooded, air-breathing, giving birth to its young alive, sucking them-and, like all mammals, originated on land. There are many signs of this. __1__ front flippers, used for steering and stability, are traces of feet.
Immense strength is built into the great body of the big whales, and in fact most of a whales body is one gigantic muscle. The blue whales pulling __2__ has been estimated at 400 horsepower. One specimen was reported to have __3__ a whaling vessel for seven hours at the __4__ of eight knots.
An enraged whale will attack a ship. A famous __5__ of this was the fate of whaler Essex, which was sunk __6__ South America early in the last century. More recently, steel ships have had their plates buckled in the same way. Sperm whales were known to __7__ the old-time whaleboats in their jaws and crush them.
The greatest mystery of whales is their diving ability. The sperm whale __8__ the bottom for his favourite food, the octopus. __9__ he is known to go as far down as 3,200 feet, where the pressure is 1,400 pounds, to the square inch. Doing __10__ he will remain submerged as long as one hour. Two feats are involved in this : storing up enough __11__ and withstanding the great change in pressure. Just __12__ he dose it scientists have not determined. It is believed that some of the oxygen is stored in a special system of blood vessels, rather than just held in the lungs. And __13__ that a special kind of oil in his head is some sort of compensating mechanism that automatically adjusts the internal pressure of his body. But __14__ you cant bring a live whale into the laboratory for study, no one __15__ just how these things work.
EXERCISE:
1. A)Their B)His C)Theirs D)Its
2. A)strength B)width C)height D)length
3. A)eaten B)crashed C)towed D)lifted
4. A)distance B)rate C)voyage D)sail
5. A)picture B)film C)example D)book
6. A)off the coast of B)of the coast of C0away the coast of D)in the coast of
7. A)hit B)seize C)damage D)overturn
8. A)sink to B)rest on C)dive to D)hide on
9. A)In that search B)Because of this C)In spite of that D)In support of this
10. A)so B)such C)above D)the same
11. A)air B)oxygen C)energy D)heat
12. A)what B)where C)how D)when
13. A)it is believed B)he believes C)we believe D)it believes
14. A)because of B)due to C)since D)owing to
15. A)communicates B)knows C)hears D)develops
答案:D A C B C A B C A A B C A C B
SAT写作经典例子之尼克胡哲Nick Vujicic
SAT写作优秀范文一篇
SAT写作满分范文欣赏及点评
SAT写作批改实例:事实需要全面的了解
SAT写作范文:英雄永垂不朽
SAT写作的备考误区
SAT写作素材分享:追求Pursuit
SAT写作范文:如何为社会做贡献
SAT写作经典例子之物理学家欧拉
如何练就SAT写作高分
SAT写作范文:挑战权威
SAT写作经典例子之古腾堡
SAT写作经典例子之迈克尔杰克逊
SAT写作范文:actions and words
SAT写作高分需要注意的7个要点
SAT写作素材:The Critical Period
SAT写作范文:英雄会被忘却吗?
深谙SAT作文评分标准得写作高分
SAT写作分低怎么办? 实例讲解SAT作文差在哪儿
SAT写作的6种例子介绍及应用方法
SAT作文开头如何引用名人名言
SAT写作经典例子之美国女权运动先驱Susan B. Anthony
SAT写作经典例子之托马斯杰弗逊
SAT考试中的Essay写作注意事项
SAT真题详解SAT作文分类
SAT写作范文:知识就是力量
SAT作文批改实例:传授知识也有收获
剖析SAT高分作文的评分规则
2014年5月亚洲SAT作文真题解析
201年6月亚洲SAT作文真题解析
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |