11.Did you once sense that someone was watching you?You turned around and,sure enough,someone was looking right at you!
Many people believe that humans have a natural ability to sense when someone is looking at them.To research whether humans really have such a"sixth sense",Robert Baker,a psychologist(心理學(xué)家) at the University of Kentucky,did two experiments.
In the first one,Baker sat behind unknowing people in public places and looked at their backs for 5to 15minutes.The subjects (受試者) were eating,drinking,reading,studying,watching TV,or working at a computer.Baker made sure that the people could not tell that he was sitting behind them during the time.Later when he questioned the subjects,almost all of them said they had no sense that someone was watching them.
For the second experiment,Baker told the subjects that they would be watched from time to time from behind.The people had to write down when they felt them being watched and when they weren't.Baker found the subjects couldn't tell when they were looked at.They didn't know when they weren't watched either.
Baker concludes that people do not have the ability to sense when they are being watched.If people doubt the outcomeof his two experiments,said Baker,"I suggest they repeat the experiments and see for themselves."
42.Why did the psychologist do the two experiments?A
A.To study whether humans can sense when they are watched.
B.To explain when people can have a sixth sense.
C.To show how people act while being watched in the lab.
D.To prove why humans have a sixth sense.
43.The underlined word"outcome"in the last paragraph most probably meansD?
A.value B.reason C.performance D.result
44.In the second experiment,the subjectsB.
A.could tell when they were watched and when they weren't
B.couldn't tell when they were watched or when they weren't
C.couldn't tell when they were watched but could tell when they weren't
D.could tell when they were watched but couldn't tell when they weren't
45.What can we learn from the passage?D
A.People are born with a sixth sense.
B.The experiments support the idea that we can sense if we are watched.
C.People have a sixth sense in all places.
D.The subjects do not have a sixth sense in the experiments.