课时作业（三十七） [选修8 Unit 2 Cloning][限时：30 分钟]I .单项填空1．I have no idea ______ the journalist could have got his information from.A ．thatB ．why C．which D ．where2．One reason for her preference for city life is ______ she can have easy access to places like shops and restaurants.A ．thatB ．how C．what D．why 3．Along with the letter was his promise he wouldvisit me this coming Christmas.A ．whichB ．that C．what D．whether4．People take naps at noon in warmer climates ，_______ the heat makes work difficult in the early afternoon.A ．whichB ．what C．where D ．when5. [2011 课标全国卷] William found it increasingly difficult to read , for his eyesight was beginning to ________ .A . disappearB . fallC. failD. damage6. As is well known ，everyone is forbidden ________ in buses ，regardless of what they are.A . to smoke B. smokingC. to be smoking D . to smoking7. —Please sit down and I'll cook you some coffee.— _______ .Let's come to the point first.A . You are welcome B. You needn't do soC. Please don't botherD. You are indeed too polite8. Last month，thousands of workers in that city went on _______ strike ，demanding lower taxes and _______ end to cutting staff members.A . a；the B. a；an C. / ；an D. /；the9. After the quarrel ，I tried all my best to remove the misunderstanding between us，but all my efforts seemed _______ .A . in vain B. in caseC. in time D . in trouble10. It is _______ great honor for China to develop _______ fastest computer in today's world.A ．a；the B．an；theC．an；an D ．a；a11．They had intended going into the country for the day ，but were _______ by reports of traffic jams.A ．put awayB ．put offC．put up D．pay down12．There are laws in some countries which forbid advertisements _______ at inappropriate times and places.A ．being shownB ．shownC．show D ．to have shown13．The way he did it was different _____ we were used to.A ．in whichB ．in whatC．from what D ．from which14．_______ was expected，only five people turned up at the party，_________________ disappointed the hostess very much.A ．As；what B．As；whichC．It ；that D．What；which15．________ afterwards ，the police stopped the car and both men were arrested.A ．ImmediatelyB ．PromptlyC．Deliberately D ．Shortlyn .阅读理解People have been acting like people —in other words ，they've been making tools ，creating ceremonies，and sharing food—for a long time. That's the conclusion of a recent study from South Africa's southern coast.There，in a cave lying above the sea，researchers from Arizona State University have found evidence that humans were behaving in surprisingly complex ways as early as 164,000 years ago. Our species，Homo sapiens ，appeared an estimated 200,000 years ago.The cave held three important clues about the behavior of these Stone Age people.First ，the researchers found the remains of all kinds of shellfish. The people who lived in the cave probably collected these creatures from rocky shores and tide pools and brought them to the cave to eat.The researchers propose the early Africans moved to the South African coast between 195,000 and 130,000 years ago. Around that time ，the climate inland turned relatively cold and dry. Therefore ，there were fewer plants and animals to eat away from the coast.When these ancient people moved to the coast ，they probably experienced a major cultural shift，the researchers suspect. That's because observations of modern hunter －gatherer societies suggest that men are more likely to hunt for big animals when people live inland. On the coast ，women play a more important role in providing food by gathering plants and shellfish.As for the second clue ，the researchers unearthed 57 pieces of reddish pigment（颜料）. The researchers think that the cave habitants used the paint for coloring their bodies or for other ceremonies. Symbolic behavior is a clearly human feature.Fin ally , the search discovered over 1,800 stone tools in clud ing well —crafted blades（刀片）. These blades came in various sizes. The smallest were just less than a half －inch wide. Ancient people may have attached these blades to the end of a stick to make spears or other tools.16. What is the passage mainly about ?A . Ancient cave behavior.B . New evidenee of ancient life.C. The history of human beings.D . Human behavior's development.17. The early Africa ns moved to the South Africa n coast with the main purpose of _______ .A . avoiding badly cold and dry weatherB . seeking the cultural developmentC . seek ingeno ugh food to live on D . livi ng a n ewer and better life18 . Accord ing to the passage, the cave habitants _______ .A . knew how to use colors for decorati onB . made a liv ing largely by hunting ani malsC . only could made tools with rough bladesD . could hunt for fish in the sea with ships19 . After the early Africa ns moved to the coast , what probably happe ned to their culture ?A . Women's role was as important as men's role in families.B . They were no Ion ger used to livi ng inlands but liv ing on the coast.C . Men's role was more importa nt tha n wome n's role in earning food.D . Wome n's role was more importa nt tha n men's role in earning food.20 . The new discoveries in the cave should support the theory that ______ .A . modern human behavior developed smoothly fast from the ancient timeB . moder n huma n behavior developed slowly from the an cie nt timeC . South Africa is the birthplace of the earliest huma n beings in the worldD . moder n huma n behavior is largely the same as ancient huma n behavior川.阅读表达阅读下面短文并回答问题，然后将答案写到相应的横线上（请注意问题后的词数要求）。