1、Unit 5 Meeting your ancestors课时作业18Learning about Language & Using Language.单词拼写1He was arrested (逮捕) for minor offences.2Living conditions in the camp were pretty primitive (原始的)3After a few years, she became very skilful/skillful (有技巧) at drawing.4Somehow (不知怎么的), the room depressed him.5What he t
2、hinks about the matter is of no significance.6Those math problems made me dizzy.7Please dont spit on the floor.8He got lost in the jungle and starved to death.选词填空regardless of， look ahead， have no alternative， care about， scare away， at most， arrest ones attention， become skillful at1This job is op
3、en to all regardless_of their previous experience.2The watchdog scared_away the thief by barking.3There are at_most 20 students watching the football match.4Whenever we are in trouble, we must look_ahead and encourage ourselves.5If he wants to get to Chicago tonight, he has_no_alternative but to go
4、by air.6Oh, really? I dont care_about my appearance much.7The new method caught on and many peasants became_skillful_at it.8Her laughter arrested_our_attention and we all stared at her.词语辨析A用if only或only if填空。1If_only the explosion had not happened!2Ill go there only_if he is invited to.解析：在only if这
5、个短语中，副词only是中心词，而从属连接词if则只是用来连接从句的，因此，它表示“只有(才)；只有在的时候，唯一的条件是”的意思。if only常常用来表达强烈的愿望或遗憾，因此，主要用在虚拟语气中，用以表达强烈的愿望或非真实条件。常被译为“但愿；要是该多好啊”等。B用quicken, accelerate, hasten, hurry, rush或speed的适当形式填空。3The ambulance sped to the hospital so that doctors could have more time to save the patient.4A middleaged lad
6、y was seen rushing out of the burning house with her clothes in disorder.5He hurried across the rails in front of a train.6He quickened his steps, which made us not follow him.7Fresh air will accelerate the recovery of the patient.8The manager hastened to point out that his products were far superio
7、r to others.解析：quicken, accelerate, hasten, hurry, rush, speed这些动词均含“加快，使加快”之意。quicken为普通用词，指增加速度、速率。accelerate着重指频率或速度运转加快。hasten指由于事情的紧迫性或突然性而加速。hurry指赶紧或匆忙地做某事或催促别人做某事，隐含草率或混乱的意思。rush含义与hurry相近，但rush显得更仓促更慌乱。speed侧重实际的快速行动，常用词组是speed up。C用divide, separate或part的适当形式填空。9Divide the candies among the
8、 children, please.10I remember the way we parted.11England is separated from France by the English Channel.解析：divide, separate, part这些动词都有“分开”之意。divide指把一个整体按要求分成几个部分，暗示分配之意；也可指分开两个对立的事物。separate指把两个人或物分开，着重从原属一个整体中移出一部分或把两者隔开。part多指使紧密相连的人或物分开，往往暗示最后分离的意味。D用skillful或skilled填空。12We have many skilled
9、 seamen on our ship, who will help us.13They both work with speed, and their skillful hands move rapidly.解析：skilled主要指因受过专门训练，从而掌握了某项专门的技术；skillful则主要指人聪明，做事灵巧等。.完成句子1She was praised for_her_skillful/skillful_performance (因她有技巧的表演). (skillful)2The crowd shouted to_applaud_his_excellent_speech (赞赏他的精
10、彩演讲). (applaud)3He is_systematic (有条理) in his way of doing his work. (systematic)4The room was so hot and dim that she felt_dizzy (感到昏眩). (dizzy)5The police have_arrested (已经逮捕) almost everybody who is involved in the robbery. (arrest)6The driver accelerated_his_car (加快车速), which disappeared in the
11、distance soon. (accelerate)7Hearing_the_wolves_howling (听到狼在嚎叫) in the forest, she hurried back home. (howl)8“Lets begin. Scratch_off_the_names (划掉名字) of those who havent turned up from the list，” announced the chairman. (scratch).阅读理解“Around 500,000 years ago, at the Peking Man Site at Zhoukoudian
12、in Beijings suburban Fangshan district, which is about 50km from the city of Beijing, there lived early human beings，” says a Chinese history textbook.The textbook now has to be revised. New dating techniques suggest the remains of Peking Manfound in the 1920sare over 200,000 years older than previo
13、usly thought. Whats important about that date, about 770,000 years ago, is that this was an ice age on Earth.Over Earths long history, there have been a number of times when ice and snow covered a large part of its surface. Such periods are known as ice ages.Earth is in an ice age now. It started ab
14、out 2 million years ago. Despite the many warm periods since then, scientists regard the whole time as one ice age because of the continuous existence of at least one large ice sheetthe one over Antarctica.The new discovery was made by Chinese and USA scientists. It suggests Peking Man is probably o
15、ur oldest cold weather human being, said Darryl Granger, an atmospheric scientist at Purdue University whose research appears in Thursdays edition of the journal Nature.The average yearly temperature at the time in that part of China was around the freezing mark, but it was too dry for an ice sheet,
16、 Granger said.This raises a question. How did Peking Man survive the cold weather?Rick Potts, a Smithsonian Institution human origins expert who wasnt involved in the research, raised three possibilities：First, fire. Early findings showed signs of a fire in Peking Mans cave. But there has been debat
17、e about whether the fire was accidental or controlled.Second, fur. There is no evidence that Peking Man used simple tools to make more formfitting clothes. Its more likely he wore animal fur.Last, he may have developed gradually to handle the cold. Peking Man may have experienced physiological chang
18、es that allowed more blood to flow to his hands and legs, Potts said. “People in general who live in colder climates tend to be shorter and wider，” he explained.Unlike the times of Peking Man, today the global temperature is rising due to the greenhouse effect. In the future, could humans develop to
19、 handle the warmth just as Peking Man did to fight the cold?本文主要讲的是一项最新的研究发现，周口店“北京人”比我们以前估计的要早二十多万年。1According to the new research, Peking Man actually dates back to _.Aaround 500,000 years agoBover 200,000 years agoCabout 770,000 years agoDabout 2 million years ago答案：C解析：细节理解题。由第二段最后一句话“Whats impo
20、rtant about that date, about 770,000 years ago, is that this was an ice age on Earth.”可知。2What is the most important standard for scientists to decide an ice age?AThe weather conditions.BThe continuous existence of any large ice sheets.CThe average yearly temperature.DThe long period of snowfall.答案：
21、B解析：推理判断题。由第四段第三句话“.scientists regard the whole time as one ice age because of the continuous existence of at least one large ice sheetthe one over Antarctica.”可知。3Which of the following is TRUE of Peking Man?AHe is the oldest human being.BHe used fire to keep warm.CHe wore formfitting clothes made
22、from fur with simple tools.DHe might have been shorter and wider than previously thought.答案：D解析：细节理解题。由倒数第二段中的“People in general who live in colder climates tend to be shorter and wider”可推知，北京人可能比我们原先预计的要矮胖，这样才能与当时的气候相适应。4What does the passage mainly want to convey to us?AThe latest discovery about
23、Peking Man.BThe life of Peking Man during the ice age.CThe way Peking Man use to fight against coldness.DThe time Peking Man dates from.答案：A解析：主旨大意题。本文是报道类文章，第二段即点明了本文的中心“北京人”的年代应该是处于冰河世纪，比我们原先的估计早二十多万年。.七选五It is important to introduce yourself in a creative, memorable way to distinguish yourself fr
24、om the crowd. _1_ Since being witty (言辞诙谐的) doesnt always come easily, try one of these creative introductions and separate yourself from the rest.Write your first or last name on a piece of paper. _2_ So if your name is Tom, you might say you are tireless, optimistic and mild._3_ Then say that you
25、will do so in the words of your “best and worst critic”your mother. By breaking the ice in this way, you can go on in either a humorous or serious fashion.Introduce yourself silently, by drawing a picture of yourself on a large sheet of paper. _4_ In fact, in some groups, it may be better if you don
26、t. Put a title at the top of your drawing, if you like, such as, “Hello! This is me.”Turn the traditional introduction upside down by describing yourself in exactly opposite terms of who you are. Have fun with this “back door approach”， and keep people guessing just how much you are exaggerating (夸张
27、). _5_ Dont bother calling me tomorrow, because I will be hiding in a closet. Send text messages to my girlfriend while I drink a Bud Light on the job.AThis introduction requires you to be gifted in art.BFreely admit that you dont like talking about yourself.CIt makes no difference whether you posse
28、ss artistic abilities.DFor example：I am probably the laziest person you will ever meet.EUse each letter as the first letter in an adjective that describes you.DBring in the surprise factorsometimes known as the shock factor.GAfter all, anybody can stand up and announce their name, business title and
29、 job responsibilities.本文是一篇说明文，介绍了几种比较有创意的自我介绍的方式。1G解析：由上文“用一种有创意的，让人记住的方法介绍你自己，使得你自己从人群中脱颖而出很重要”可知，下文具体说明这样做的原因，故G符合语境。2E解析：由下文所举的例子“So if your name is Tom, you might say you are tireless, optimistic and mild”可知E符合语境。3B解析：由下文暗示“Then say that you will do so in the words of your best and worst critic”“By breaking the ice in this way”可知B项符合语境。此处表示大方地承认你不喜欢谈论自己，然后说你会用妈妈对你所做的最好和最坏的评论谈论自己。4C解析：由上文信息“drawing a picture of yourself”可知此处涉及绘画方面的内容，故C“你是否有艺术才能不重要”符合语境。5D解析：上文提到“describing yourself in exactly opposite terms of who you are”可知，下文具体举例说明了这种介绍方式，故D符合语境。
