Unit 4　Earthquakes语篇演练二十

1、Unit 4Earthquakes语篇演练(二十)时间安排：第七周·周三演练题型：阅读理解2篇建议用时：15分钟答案栏：14_58_AInsects are usually quite small, some of which may be an inch or two long. But scientists now surmise that creatures like these were once very large. Recently, they have found fossils (化石) of huge cockroaches, which are bugs (虫子

2、) with six legs that are still around today. However, they say that they still need more evidence.A few years ago, scientists found the fossils of a claw (爪子) in Germany. It was found in a place that was once an area of land covered by water. They thought that the claw belonged to a sea scorpion (海蝎

3、). Then they put it together in the shape of the body. They were amazed at its size.How big was it? It was really big. The claw was a foot and a half long. That would make the bug eight feet long! That is the size of a small car. It is bigger than the tallest of men. Scientists were very excited to

4、have found the fossil of the largest bug ever known.Imagine a large bug walking across your kitchen floor! Imagine watching the bug drink water from a pool! That would be very frightening.Humans were never in danger from this bug. The sea scorpion lived 400 million years ago. Fish lived on Earth the

5、n, but dinosaurs did not. The sea scorpion lived about 150 million years before dinosaurs.Huge sea scorpions lived for many years. They had no enemies until fish began to grow large teeth. Then fish began eating them. Finally, huge sea scorpions died out. Fortunately, at least one sea scorpion left

6、a claw behind but it became as hard as stone. Then one day it was discovered, and this is the claw that the scientists found.Now scientists believe that more bugs from long ago were also very large, even though these creatures are small today. Only more fossil discoveries will tell.1According to the

7、 text, the scientists in Germany _.Afound the fossils of many huge bugs Bfound out where bugs lived long ago Cfound the fossils of a sea scorpion's claw Dfound out that bugs lived before humans2How does the author describe the size of the sea scorpion in Paragraph 3?ABy comparing it with a car a

8、nd a man.BBy showing the food it ate every day.CBy explaining how it got so big as years passed by.DBy describing when things happened in a certain order. 3Why did huge sea scorpions exist for a long time?AThey were larger than any other animals.BThere was enough water for them to drink.CThey knew w

9、ell how to protect themselves.DFish with large teeth only appeared many years later.4What does the author mainly tell us in the text?ASea scorpions were the rulers of Earth before dinosaurs appeared.BThe fossils of bugs discovered in Germany make scientists puzzled.CA sea scorpion was able to grow e

10、ight feet long 400 million years ago.DThe fossils of a sea scorpion's claw show that huge bugs lived long ago.BLions communicate with each other through body language， touch, smell, and sound. Lions from the same pride(狮群) greet each other by touching their faces, necks and bodies together.Lions

11、 have many scent glands (臭腺) on their faces, lips, foreheads and tails (尾巴). A lion's scent communicates with other lions where they have been and how long ago. They also use scent to attract a friend. Lions have an extra smell organ (器官) called the Jacobson's organ that is used to smell oth

12、er cats. In order to use this organ, a lion shuts off his nose，and tastes the air through his mouth!Lions use many parts of their bodies to communicate their feelings through posturing. Because their most dangerous weapons (武器) are their teeth，the most important body part used to communicate is thei

13、r face. When lions feel threatened and are scared, they show their weapons, raise their tails and lift their backs trying to look as big as possible. The king of the pride will walk with his head held high, his ears standing upright, his mouth closed, and his tail waving from side­to­side.

14、 The other members of the pride will walk with their heads held low, their mouths open, and their teeth showing. A lion is able to notice even the slightest change in posture of another lion.The lion is the loudest of all big cats.Because lions are one of the most threatening animals in the wild, th

15、ey are not scared to be noisy. Loud roars help keep kings of different prides away from one another. Mothers and their young use the largest variety of calls to communicate because they are the members of the pride that spend the most time together.5By smelling a lion can know _.Aif there are other

16、lions around himBhow many lions are in the pride Cwhere he can find weaponsDwhere a lion will go 6Which of the following behaviors is friendly?ASmelling each other.BTouching each other.CRoaring to each other.DShowing their teeth to each other.7When a lion is scared, he will _.Aclose his eyesBput dow

17、n his tail Cmake himself look biggerDstand high with his back feet 8What can we know from the last paragraph?AThe lion is the loudest animal in the wild.BLoud roars can be warnings to other prides.CMembers of a pride have the same language.DIt's not easy for mother lions to find their children.答

18、案语篇解读：本文是说明文。巨蝎爪化石的发现让人们知道了很久以前地球上曾经有体积巨大的虫子存活过。1选C细节理解题。由第二段中的“scientists found the fossils of a claw in Germany 和They thought that the claw belonged to a sea scorpion”可知C项说法正确。2选A写作手法题。由第三段中的“That is the size of a small car. It is bigger than the tallest of men”可知，作者通过把海蝎同汽车和人作对比来描述其尺寸。3选D推理判断题。由倒数第二段中的内容可