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13.What are the two speakers mainly talking about?
A.Parks.B.Seasons.C.Kite-flying.
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3.Where is the man going to spend his Christmas?
A.In his brother's.B.In his mother's.C.In his sister's.
4.What did the man buy for the woman's birthday?
A.A fruit cake.B.Some apple pies.C.A bunch of flowers.
1.How much did the man pay for the shirt?
A.﹩20.B.﹩18.C.﹩10.
8.What does the man imply?
A.He is tired now.B.He likes lying on the sofa.C.He likes washing the clothes.
18.What does the man mean?
A.He is tired of aerobics (有氧健身运动).
B.Aerobics teaching is easy to him.
C.It's his 5th year of teaching aerobics.
5.What does the man do?
A.A decorating worker.B.A beauty expert.C.An artist.
2.We humans are imperfect beings tending to make mistakes and basic errors of judgment.So we create technologies to help ourselves out.
Take the self-driving cars for example.The belief here is that the technology will improve safety.But this is a very bold assumption to make at this stage in its development,as the evidence to support the view simply is not there yet.The best data we have comes from tests conc1ucted over the course of 2016in California,a state which,it must be remembered,has a mild climate hardly representing global driving conditions.
Google's Waymo scored best,with one human intervention(介入)every 5,127 miles driven.This was an improvement on the year before,but nowhere near perfect.In all,Waymo's 60 testing vehicles drove about 10,597 miles in 2016-3,000 miles less than the annual US average per vehicle.Tesla performed much worse.The electric vehicle maker's four cars were tested on average 137 miles each that year,meeting with 45 human interventions per vehicle-or one roughly every three miles.Each Intervention represents an accident which was potentially avoided.
Given that most industry watchers believe the public will not tolerate any faults at all,none of this is encouraging.It is certainly true that the technology is improving.But it is also the case that self-driving cars have been around since the mid-1990s,with one vehicle achieving a 98.2 percent"autonomous driving percentage"even back then.
Even if the technical challenges can be overcome,unexpected negative externalities(外在因素)probably cannot.And we surely would not want to risk that when driving.
28.What does the underlined word"bold"in Paragraph 2mean?C
A.black
B.ridiculous
C.daring
D.perfect
29.What can we learn from the self-driving tests in Paragraph 3?A
A.Human interventions are unavoidable.
B.Waymo's cars could drive farther than Tesla's.
C.Electric vehicles need fewer human interventions.
D.Each intervention caused an accident.
30.What is the author's attitude to self-driving cars?B
A.It's unbearable.
B.It's sceptical.
C.It's very economical.
D.It's very encouraging.
31.What may be the best title for this passage?D
A.Can self-driving improve test skills?
B.Self-driving:Costly or not?
C.Can self-driving represent new technology?
D.Self-driving:Reliable or not?
12.Some of us were born clever and some stupid.Intelligence is developed by our environment and our experience.Why?To some extent our intelligence is given to us at birth,and no amount of education can make a genius out of a child born with low intelligence.On the other hand,a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings.Thus the limits of person's intelligence are fixed at birth,whether or not he reaches those limits will depend on his environment.This view,now held by most experts,can be supported in a number of ways.
It is easy to show that intelligence is to some extent something we are born with.The closer the blood relationship between two people,the closer they are likely to be in intelligence.Thus if we take two unrelated people at random from population,it is likely that their degree of intelligence will be completely different.If,on the other hand,we take two identical twins,it will be very likely that they are as intelligent as each other.Relations like brothers and sisters,parents and children,usually have similar intelligence,and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments.We might send one,for example,to a university and the other to a factory where the work is boring.We would soon find differences in intelligence developing,and this indicates that environment as well as birth plays a part.This conclusion is also suggested by the fact that people who live in close contact with each other,but who are not related at all are likely to have similar degree of intelligence.
29.Which of these sentences best describes the writer's point in Paragraph 1?C
A.To some extent,intelligence is given at birth.
B.Intelligence is developed by the environment.
C.Intelligence is influenced both by birth and the environment.
D.Some people are born clever and others born stupid.
30.The underlined phrase"at random"meansA.
A.aimlessly
B.frequently
C.purposely
D.independently
31.The best title for this article would beB.
A.What Does Intelligence Mean?
B.On Intelligence
C.We Are Born with Intelligence
D.Environment Plays a Part in Developing Intelligence.
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