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1、Unit 7 The sea Section Lesson 4.单句语法填空1.These plants have to _(water) as often as possible so that they can _(survivor) the hot summer days.答案：be watered；survive 2It is difficult _(recognition) my friend in such a crowd.答案：to recognise3If you have a job，_(devote) yourself to it and finally youll suc
2、ceed.答案：do devote 4After staying in hospital for long，the patient was advised to go to the seaside to pick _his health.答案：up5She looks sad.Could you please tell me what it is_prevents her from being as happy as before?答案：that 6Mr Smith found that gas _(escape) from the pipe when he came back because
3、 we forgot to switch off.But at last we were lucky to escape_(punish)答案：was escaping；being punished7. It took a long time for him _(recovery)答案：to recover8The country has sent up three unmanned spacecrafts，the most recent _(launch) at the end of last month.答案：having been launched.完成句子1他的确在音乐会上表现很好。H
4、e_on the concert.答案：did perform well 2没有食物和水我们活不了多久。We cant _without food and water.答案： survive for long3他们朝着罗马的方向出发了。They set off _Rome.答案： in the direction of4这么多人缺席，会议不得不推迟。_，the meeting had to be put off.答案： So many people absent5我正在街上散步，突然发生了一起事故。I_the accident happened.答案：was walking in the st
5、reet when.阅读理解Domesticated (家养的) pigs were present in northern Germany around 4600 BC，some 500 years earlier than previously thought，new fossil and DNA evidence reveals.The finding is significant because the people living in that part of Europe at the time were Mesolithic (中石器时代) huntergatherers who
6、 primarily lived on wild game.These people，known as the Erteblle，kept domesticated dogs as hunting companions，but it would be several hundred years before they began raising animals and crops for food.One hypothesis for how the people came to acquire the pigs is that they traded for them with their
7、farmer neighbors to the south.“It would have been hard for the huntergatherers not to be fascinated by the strangelooking spotted pigs owned by farmers living nearby，” study coauthor，Greger Larson，an archaeologist at Durham University in the UK，said in a statement.“It should come as no surprise that
8、 the huntergatherers acquired some eventually，but this study shows that they did very soon after domestic pigs arrived in northern Europe.”Analyses of the teeth of the domesticated pig bones suggest the animals were smaller than those of wild pigs living in northern Germany at the time.This size red
9、uction is characteristic of the first phase of domestication for many species，explained study coleader，Almut Nebel，a biologist at ChristianAlbrechtsUniversity.The remains also showed variations in one gene，which suggests the early farm pigs also had another classic characteristic of domesticated ani
10、mals：coats that varied in color and that were spotted.Overall，though，the ancient European porkers (肥小猪) would have been lighter and smaller than modern varieties.“Modernday pigs are bred for high amounts of fat and meat，” KrauseKyora said.“Todays pig breeds have an extra pair of ribs (肋骨).and they a
11、lso have a different skull shape.”The snouts (鼻子) of the ancient domesticated pigs would also have been longer and more wild piglike than those of modern breeds.While the Erteblle people acquired the pigs，there is no evidence that having the animals inspired them to try their hand at pig breeding th
12、emselves.“It would be a couple of hundred years before they really got into domestication，” Nebel said.“It could have started with the pigs，but we dont know for sure.”语篇解读家养的小猪早在公元前4600年就出现在了德国北部，这比人们以前认为的还要早500年左右。这个发现很有意义，因为那个时候那儿的人们主要还是依靠打猎来维持生存。1It was originally thought that domesticated pigs w
13、ere present in northern Germany_.Aaround 4100 BCBaround 5100 BCCaround 4600 BC Daround 500 BC解析：细节理解题。根据第一段中的“Domesticated pigs were present in northern Germany around 4600 BC，some 500 years earlier than previously thought.”可知家养小猪最早出现在德国北部是公元前4600年，比原来想的要早500年左右。那么原来想的就是比公元前4600年晚了500年左右，也就是公元前4100年
14、左右。答案：A2What does the underlined word in the second paragraph mean?ADoubt. BEvidence.CAssumption. DChallenge.解析：词义猜测题。根据第二段和第三段的内容可知，至于人们是怎么得到这些小猪的一个“假想”就是他们和南方务农的邻居们交易得来，这些打猎的人很可能是被这些长相奇怪的动物吸引了。答案：C3What would the domesticated pigs at that time have been like?AThey would have shorter snouts than modern ones.BThey would have been heavier than modern domesticated pigs.CThey would have longer snouts than wild pigs at their time.DThey would have been smaller than todays domesticated pigs.解析：细节理解题。根据第七段中的“.the ancient European pokers would
