I'm taking a test and have to guess the right answer to the question after the article. Article: Suppose we built a robot to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No, the robot would be using up energy at a time when it was not receiving any. So we would probably program it to stop its activity at night and to wake up at dawn the next morning. According to evolutionary theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent. The evolutionary theory explain the differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers. Question: The author uses the example of the robot in space exploration to tell us _ . Options: A: the differences between robots and men B: the reason why men need to sleep C: about the need for robots to save power D: about the danger of men working at night
B
I'm taking a test and have to guess the right answer to the question after the article. Article: Smith entered Mr.Watson's office.The boss was a hard man.He fired people who didn't do well without giving them a second chance. "Smith," said Mr.Watson,"this past year your department hasn't earned money.We're going to drop that department.It's finished.I'm sorry,--but you'll have to go." "But,sir--if I just had a little more time.For the moment I need the job to keep my son at Riverside School." "What's that!" said the boss."Riverside!I didn't know you had a boy there.That's an expensive school for a man with your salary." "I know,sir.But he likes it there so much!He's a star athlete and the best boxer in the school.The boys call him Champ there." The boss sat perfectly still for a long time--a faraway look in his eyes.Then,suddenly,he said,"We've got to close your department,Smith. But you'll take over a new job in another department.It means longer hours--maybe more pay.Now get out.You're here for life." Smith got out,with surprise on his face.Then the boss took a letter from the top drawer of his desk.It was Herbie's last letter from Riverside School--written a few days before he died.He had read it over and over again with sick pain.The letter read: I can't say the boys here are any nicer to me than the others were.I guess it's the same everywhere when you're a cripple .But don't worry about me,Dad.They've got a good chemistry department here.And there's one boy here who is really great.He's a track star and boxing champ and just tops in chemistry.The boys call him Champ.He made them stop throwing my books around.And he knocked a boy down who hit me.He is the best friend I ever had.Dad,when I grow up,I want to do something for Champ.Something big--that he won't even know about. Question: Mr.Watson wanted to fire Smith because _ . Options: A: Smith would take over a new job in another department B: Smith had his son study in Riverside School C: Smith 's son knocked a boy down who hit Herbie D: Smith 's department didn't earn money that year
D
I'm taking a test and have to guess the right answer to the question after the article. Article: Go to church, then have a big lunch, then go out to play while mum does the housework. That was a typical British Sunday in the 1960s. But things now could not be more different. Some British sociologists recently studied the typical British Sunday. They found that people get up later and do less housework than they did 40 years ago. They are far more likely to be out shopping or enjoying themselves than cooking Sunday lunch. Sunday mornings were busy 40 years ago. Most women caught up on their weekly housework and cooked a nice lunch. They seldom allowed themselves any "leisure" until afternoon, after the dishes were cleaned. Then there would be another rush to the table between 5:00 pm and 6:00 pm for tea. But now, Britons can have brunch at the restaurant. Fewer people bother to cook themselves. "You only have two free days a week. You don't want to have to waste one because there is nothing to do but watch boring TV," said Elizabeth Biggs, 25, a producer in London. "On Saturday you are recovering from the week," Biggs added. "Sundays are the last chance for the weekend -- you want to get as much as you can out of the day before you have to go back to work." In the past, British women usually did their shopping during the week, while the husband was at work. "Now men seem to do that as much as women," said Jonathan Gershuny, a professor who took part in the study. Men also do more housework now on Sundays. Back in the 1960s, men were far more likely to spend Sundays out of the house -- at the pub or playing football -- before lunch. Question: Which of the following is NOT true? Options: A: Britons used to go to church on Sundays. B: Britons usually had a big lunch at home. C: British women did their shopping on Sundays in the past. D: British men did little housework at home in the past.
C