1. Passage Thirty-TwoHave you ever heard of a pawpaw (木瓜)? If not， do not feel bad.Many Americans do not know of the fruit， although it is native to the U.S.Once， however， it was one of the most popular fruits in North America.Happily， those who love the pawpaw are trying to return it to its former position in American foods.A pawpaw is a tropical fruit that used to be grown along the East Coast from New York to Florida and all over the eastern U.S.At one time， it could be found as far west as Nebraska.The pawpaw was an important food for Native Americans and even early European settlers.Pawpaws reportedly were a favorite treat of George Washington， the first U.S.president， who especially liked them cold.Thomas Jefferson， the third U.S.president， was also a fan of the fruit.He planted pawpaws at his home in Virginia.He also sent pawpaw seeds to his friends in France.American explorers Lewis and Clark wrote in their journals about the pawpaw.The pawpaw is difficult to be sold commercially.The fruit requires a very special environment—low， wet areas that sometimes flood.It has a very short harvest season， from two to three weeks in September and October.In addition， the fruit is good to eat for only two to three days after harvesting.This makes it hard to sell anywhere distant from the pawpaw tree it comes from.Planters are again growing pawpaw trees and harvesting the fruit.In several states farmers have organized “pawpaw festivals” to reintroduce people to food.At such a festival in Maryland recently， farmers displayed different products made with pawpaws， like pawpaw jams， pies， ice-cream and beer.Many American people do not know that the pawpaw ().

15.She cooked the meat for a long time so as to make it ()enough to eat.

A. 　mild

B. 　slight

C. 　light

D. 　tender

4. Passage FourteenFor a long time， people have disagreed about whether golf is a sport or a game.On one side of the argument， people say that golf meets the dictionary definition of a sport， because it is a physical， athletic activity.They add that golf is recognized as a sport by sporting goods companies， athletic groups， fans， and the media.Also， golf’s inclusion in the Olympics in 2016 is more proof that it is a sport.On the other side， people say that golf is a game， not a sport.They say golf is not a very physical activity and can be played well by people who are overweight or injured.Also， golf was only recently added to the Olympics.For more than 100 years it was not included in the Olympic Games.For many， the Olympic Games serve as a measurement for whether an activity should be called a sport.Golf was first included in the Olympics in 1900.However， it was removed shortly thereafter because of a lack of participation and conflict with other golf events.Through the years， there were several attempts to bring golf back to the Olympics.It wasn’t until the 2016 Summer Olympics in Rio de Janeiro， Brazil that golf returned.Some say the return of golf does not prove that it is a sport.Rather， it only proves that the Olympics wanted to benefit from the star power of famous golfers like Tiger Woods.The disagreement continues today.Those who think golf is a sport point to pro-golfers like Woods， who are strong and fit.Those who disagree point to golfers like John Daly.He is a successful pro-golfer who once had health problems.So is golf a sport? The answer depends on who you ask——and whether that person owns a set of golf clubs.According to Paragraph 5， the inclusion of golf in the Olympics ().

45.She gave us food and clothes and asked for nothing in return， which made us very grateful.

35.You don’t have to pay for your flights: they’re ()in the price of your holiday.

A. 　concluded

B. 　held

C. 　settled

D. 　included

4. Passage TwentyAll friendships require a certain amount of chemistry.But when two people of the opposite sex become friends， sometimes those friendly feelings can start to resemble something more like sexual tension.Male-female friendships can be an emotional minefield of hidden desires.Does this mean you secretly want to jump into bed with all of your friends? Of course not.But do you ever wonder how many of them might be interested if the opportunity presented itself? Maybe you and your platonic (柏拉图式的)friendship are just a bad breakup and a bottle of wine away from crossing that boundary and hooking up (结合).So can two people of the opposite sex ever really be “just friends?” The Hollywood answer to this age-old question is a decisive HELL NO.On screen， male-female friendships always turn into something more.Harry and Sally， Chandler and Monica， Jim and Pam…… Do I need to go on? Even the characters in Just Friends wind up becoming much more than the film’s definitive title suggests.Cinematic stories dictate that when reasonably attractive men and women befriend one another， they are always on the road to romance， whether they realize it or not.But how much truth is there to this friendship as foreplay theory? It is not a whole lot.Real life isn’t a romantic comedy.Men and women go to school together， work together and hang out in plenty of platonic settings without falling hopelessly in love with one another.Last year， a close female friend of mine moved in with a new male roommate.My immediate reaction was， “You two are definitely going to sleep together.” It seemed to me that a single man and woman living under the same roof would inevitably end up doing it.Much to my surprise， the roommate romance never happened.Almost one year later， the two of them have never even come close to seeing each other naked.Instead， their way of life has come to resemble a sexless marriage.They cook for each other， argue over domestic chores and insist that they never， ever think about each other “that way.”In real life， Hollywood foreplay theory ().

50.You may ()these heavy clothes till you need them again next winter since spring is here，

A. 　put off

B. 　put down

C. 　put over

D. 　put away

2. Passage Twenty-SixToday just as technology changed the face of industry， farmers have undergone an “agricultural revolution”.On the farm of today， machines provide all the power.One of the most important benefits will be the farm computer.A few forward-looking farmers are already using computers to help them run their farms more efficiently.The computers help them keep more accurate records， so they can make better decisions on what crops to plant， how much livestock to buy， when to sell their products， and how much profit they can expect.Many computer companies have been developing special computer programs just for farmers.Programs are being written for hog (猪)producers， grain farmers， potato farmers， and dairy farmers.In the future， farmers will be able to purchase computer programs made to their needs.Because of the growing importance of computers on the farm， students at agricultural colleges are required to take computer classes in addition to their normal agricultural courses.There can be no doubt that farmers will rely on computers even more in the future.While the old-time farm depended on horse power， and modern farms depend on machine power， farms of the future will depend on computer power.Another technological advance which is still in the experimental stage is the robot， a real “mechanized hired hand” that will be able to move and， in some ways， think like a human being.Agricultural engineers believe that computer-aided robots will make startling changes in farming before the end of the century.Unlike farmers of the present， farmers of the future will find that many day-to-day tasks will be done for them.Scientists are now developing robots that will be able to shear (修剪)sheep， drive tractors， and harvest fruit.Even complex jobs will be done by robots.For example， in order to milk their cows， farmers must first drive them into the special barn (畜棚)， then connect them to the milking machines， watch the machines， and disconnect them when they are finished.In the future， this will all be done by robots.In addition， when the milking is completed， the robots will automatically check to make sure that the milk is pure.The complete mobilization of the farm is far in the future， but engineers expect that some robots will be used before long.According to the passage， computers can not help farmers decide ().

1. Passage SixteenJustin was always prepared.His motto was “Never throw anything out， you never know when it might come in handy.” His bedroom was so full of flat bicycle tires， bent tennis rackets， deflated basketballs， and games with missing pieces that you could barely get in the door.His parents pleaded him to clean out his room.“What use is a fish tank with a hole in the bottom?” his father asked.But Justin simply smiled and repeated his motto， “Never throw anything out， you never know when it might come in handy.”When Justin was away from home， he always carried his blue backpack.He liked to think of it as a smaller version of his bedroom——a place to store the many objects that he collected.It was so worn and stretched that it hardly resembled a backpack anymore.It was full of the kind of things that seemed unimportant， but when used with a little imagination， might come in handy.Justin had earned a reputation for figuring things out and getting people out of otherwise hopeless situations.Many of his classmates and neighbors sought him out when they needed help with a problem.On the first day of school， his friend Kenny， came looking for Justin.“Do you think you have something in your bag that could help me remember my locker combination?” he asked.“I lost the paper it was written on.I have science class in two minutes and if I’m late on the first day it’ll make me look bad for the rest of the year.” Kenny looked genuinely worried.“Relax，” Justin said， taking his backpack off and opened it.“Remember how you borrowed my notebook in homeroom to write the code down? Well， I know how we can recover what you wrote.”He took the notebook and a soft lead pencil out of his bag.The page that Kenny had written on had left faint indentations (旧凹痕)on another page in the notebook.Justin held the pencil on its side and rubbed it lightly over the indentations.Slowly but surely the numbers of the locker combination appeared in white， set off by the gray pencil rubbings.“That’s amazing!” Kenny said.“I owe you one.” And he dashed off to open his locker.Why is Justin’s room such a mess?

44.He has made it clear ()he will never go back on his word.

A. 　where

B. 　when

C. 　however

D. 　that

2. Passage Thirty-FourMuch unfriendly feeling towards computers has been based on the fear of widespread unemployment resulting from their introduction.Computers are often used as part of automated (自动化的)production systems requiring a least possible number of operators， causing the loss of many jobs.This has happened， for example， in many steelworks.On the other hand， computers do create jobs.They are more skilled and better paid， though fewer in number than those they replace.Many activities could not continue in their present form without computers， no matter how many people are employed.Examples are the check clearing (交换)system of major banks and the weather forecasting system.When a firm introduces computers， a few people are usually employed in key posts (such as jobs of operations managers)while other staff are re-trained as operators， programmers， and data preparation staff.After the new system has settled down， people in non-computer jobs are not always replaced when they leave， resulting in a decrease in the number of employees.This decrease is sometimes balanced by a substantial increase in the activity of the firm， resulting from the introduction of computers.The attitudes of workers towards computers vary.There is fear of widespread unemployment and of the takeover of many jobs by computer-trained workers， making promotion for older workers not skilled in computers more difficult.On the other hand， many workers regard the trend toward wider use of computers inevitable.They realize that computers bring about greater efficiency and productivity， which will improve the condition of the whole economy， and lead to the creation of more jobs.This view was supported by the former British Prime Minister， James Callaghan in 1954， when he made the point that new technologies hold the key to increased productivity， which will benefit the economy in the long run.The word “They” in paragraph 2 refers to ().