阅读理解。 The biggest safety threat facing airlines today may not be a terrorist

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阅读理解。     The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man
with the portable computer in business class. In the last 15 years, pilots have reported well over
100 incidents that could have been caused by electromagnetic interference. The source of this
interference remains unconfirmed, but increasingly, experts are pointing the blame at portable
electronic devices such as portable computers, radio and cassette players and mobile telephones.
     RTCA, an organization which advises the aviation(航空) industry, has recommended that all
airlines ban such devices from being used during "critical" stages of flight, particularly take-off
and landing. Some experts have gone further, calling for a total ban during all flights. Currently,
rules on using these devices are left up to individual airlines. And although some airlines prohibit
passengers from using such equipment during take-off and landing, most are reluctant to enforce
a total ban, given that many passengers want to work during flights.
     The difficulty is predicting how electromagnetic fields might affect an aircraft"s computers.
Experts know that portable devices emit radiation which affects those wavelengths which
aircraft use for navigation and communication. But, because they have not been able to reproduce
these effects in a laboratory, they have no way of knowing whether the interference might be
dangerous or not.
     The fact that aircraft may be vulnerable (易受损的) to interference raises the risk that
terrorists may use radio system in order to damage navigation equipment. As worrying, though,
is the passenger who can"t hear the instructions to turn off his radio because the music"s too loud.
1. The passage is mainly about ________.A. a new regulation for all airlines.
B. the defects of electronic crashes
C. a possible cause of aircraft crashes
D. effective safety measures for air flight2. What is said about the over 100 aircraft incidents in the past 15 years?______A. They may have been caused by the damage to the radio systems.
B. They may have taken place during take off and landing.
C. They were proved to have been caused by the passengers" portable computers.
D. They were suspected to have resulted from electromagnetic interference.3. Few airlines want to impose a total ban on their passengers using electronic devices because _______.A. they don"t believe there is such a danger as radio interference.
B. the harmful effect of electromagnetic interference is yet to be proved.
C. most passengers refuse to take a plane which bans the use of radio and cassette players.
D. they have other effective safety measures to fall back on. 4. Why is it difficult to predict the possible effects of electromagnetic fields on an airplane"s
computers?______A. Because it is extremely dangerous to conduct such research on an airplane.
B. Because it remains a mystery what wavelengths are liable to be interfered with.
C. Because research scientists have not been to produce the same effects in labs.
D. Because experts lack adequate equipment to do such research.
5. It can inferred from the passage that the author _________.A. is in favor of prohibiting passengers" use of electronic devices completely
B. has overestimated the danger of electromagnetic interference
C. hasn"t formed his own opinion on this problem
D. regards it as unreasonable to exercise a total ban during flight

答案

1-5CDBCA

举一反三

阅读理解。     Many Chinese have been greatly shocked by the traffic accident caused by the drunk driver Sun
Weiming, who has killed five and injured some others in Chengdu, Sichuan. However, such a case is not
rare.
     Today, traffic accidents may have been regarded as a social problem. The car has killed and disabled more people in its brief history than any bomb or weapon ever invented. Much of the blood on the street
flows actually from rude behavior of drivers who refuse to respect the legal and moral rights of others. In
fact, the enemies of society on wheels are rather harmless but just ordinary people acting carelessly, you
might say. But it is a principle both of law and common morality that carelessness is no excuse when one"s actions could bring death or damage to others. A minority of the killers go even far beyond carelessness
that can be imagined.
     Researchers have estimated that as many as 80 percent of all automobile accidents can be attributed to the psychological condition of the driver. Emotional upsets can change drivers" reactions, slow their
judgment, and make them blind to the dangers that might otherwise be evident. The experts warn that it is
vital for every driver to make a conscious effort to keep his/her emotions under control.
     Yet the irresponsibility that accounts for much of the problem isn"t only put upon drivers. Street walkers regularly ignore or break traffic regulations. They are blamed in most vehiclewalker accidents, and many
cyclists even believe that they are not subject to the basic rules of the road.
     Significant legal advances have been made towards safer driving in the past few years. Safety standards for vehicles have been raised both at the point of manufacture and through regular road inspections. In
addition, speed limits have been lowered. Due to these measures, the accident rate has decreased. But the accident experts still worry because there has been little or no improvement in the way drivers behave. The only real and lasting solution, say the experts, is to make people believe that driving is a skilled task
requiring constant care and concentration. Those who fail to do all these things present a threat to those
with whom they share the road.1. Traffic accidents may be regarded as a social problem because _____.   A. auto driving has become dangerous and harmful in today"s society
B. people usually pay no attention to law and morality when driving
C. they have caused serious psychological problems among drivers
D. the car has killed and disabled more people than any weapon in history2. Who are NOT mentioned to be responsible for the road accidents in the passage?  A. Careless bicycleriders.
B. Careless people walking in the street.
C. Irresponsible auto drivers.
D. Irresponsible auto manufacturers.3. By discussing solutions to traffic accidents,  the author seems to be _____.A. doubtful and hopeless
B. angry and disappointed
C. objective and concerned
D. anxious and annoyed4. The author writes this passage to _____.   A. show his worries about drunk driving
B. help protect street walkers from car accidents
C. discuss traffic problems and possible solutions
D. warn auto drivers to refuse drunk driving

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阅读理解。     I find some of the ways in which Chinese parents show love for their children rather
surprising.Obviously there are some pretty big differences between our behavior and theirs
in this respect.Most Chinese children seem to get whatever they want,from ice creams,sweets
and toys to endless attention from the adults around them.Is this a sort of spoiling or love?I
wonder.
     Most westerners would think it is a sort of spoiling rather than love.We think love means
educating your children and bringing them up to lead an independent life.That includes learning
to accept the fact that he can"t get everything he wants.As an adult,he will not always get the
quite expensive car he hunts for；she will not always manage to acquire the beautiful dress
she longs for.So we try to teach our children early to cope with the disappointment of not
getting what they want.
     I find too much such kind of love for the children can actually spoil them.To my surprise,it
seems that the life of a Chinese child is rather hard.Without doubt,the child is the very center
of a whole circle of adults,but on the other hand he or she is also expected to start studying
according to adults" wishes.Many children of my son"s age take piano lessons,painting classes
and even English lessons.It looks as if Chinese adults think that just playing without learning
anything is a waste of time.So in this respect our children appear spoiled,just because they
are allowed to play.But without this sort of play how can Western children develop such free
and rich imaginations?In fact the connection between this imagination and the creativity is so
important in the children" s future life.1．In which way do most Chinese children seem to be spoiled?A．They can be supported by their parents.
B．They can play whenever they want.
C．They need not behave themselves.
D．Their demands can always be satisfied.2．In the author"s opinion,the life of a Chinese child is________.A．rather hard
B．rather easy
C．independent
D．colorful3．The author thinks Western children appear spoiled because______.A．they can manage time by themselves
B．they can have the freedom to play
C．they can take piano lessons
D．they may have expensive toys4．The best title of the passage could be________.A．Chinese children"s early education
B．How to develop kids" imagination
C．What is the real love for children
D．The imagination and creativity

题型：陕西省同步题难度：| 查看答案

阅读理解。     The evidence for harmony may not be obvious in some families.But it seems that four out
of five young people now get on with their parents,which is the opposite of the popularly held
image of unhappy teenagers locked in their room after endless family quarrels.
     An important new study into teenage attitudes surprisingly shows that their family life is more
harmonious than it has ever been in the past."We were surprised by just how positive today"s
young people seem to be about their families,"said one member of the research team."They"re
expected to be rebellious (叛逆的) and selfish but actually they have other things on their minds；
they want a car and material goods,and they worry about whether school is serving them well.
There"s more negotiation (商议) and discussion between parents and children,and children expect
to take part in the family decisionmaking process.They don"t want to rock the boat."
     So it seems that this generation of parents is much more likely than parents of 30 years ago to
treat their children as friends."My parents are happy to discuss things with me and willing to listen
to me," says 17yearold Daniel Lazall."I always tell them when I"m going out clubbing.As long as
they know what I"m doing,they"re fine with it." Susan Crome,who is now 21,agrees."Looking back
on the last 10 years,there was a lot of what you could call negotiation.For example,as long as I"d
done all my homework,I could go out on a Saturday night.But I think my grandparents were a lot
stricter with my parents than that."
     Maybe this positive view of family life should not be unexpected.It is possible that the idea of
teenage rebellion is not rooted in real facts.A researcher comments,"Our surprise that teenagers
say they get along well with their parents comes because of a brief period in our social history
when teenagers were regarded as different beings.But that idea of rebelling and breaking away
from their parents really happened during the 1960s when everyone rebelled.The normal situation
throughout history has been a smooth change from helping out with the family business to taking it
over."1．What is the popular images of teenagers today?A．They worry about school.
B．They dislike living with their parents.
C．They have to be locked in to avoid troubles.
D．They quarrel a lot with other family members.2．The study shows that teenagers don"t want to________.A．share family responsibility
B．cause trouble in their families
C．go boating with their family
D．make family decisions3．Compared with parents of 30 years ago,today"s parents________.A．go to clubs more often with their children
B．are much stricter with their children
C．careless about their children"s life
D．give their children more freedom

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阅读理解。     "In only six days I lost seven pounds of weight."
     "Two full inches in the first three days!"
      These are the kinds of statements used in magazine,newspaper,radio and television ads,
promising new shapes and new looks to those who buy the medicine or the device.The
promoters of products say they can shape the legs,slim the face,smooth wrinkles,or in some
other way to add to beauty or desirability.
      Often such products are nothing more than moneymaking things for their promoters.The
results they produce are questionable,and some are dangerous to health.
To understand how these products can be legally promoted to the public,it is necessary to
understand something of the laws covering their regulation.If the product is a drug,FDA
(Food and Drug Administration)can require proof under the Food,Drug,and Cosmetic Act
that is safe and effective before it is put on the market.But if the product is a device,FDA
has no authority to require premarketing proof of safety or effectiveness.If a product already
on the market is a danger to health,FDA can request the producer or distributor to remove it
from the market voluntarily,or it can take legal action,including seizure(查封)of the product.
     One notable case a few years ago involved an electrical device called the Relaxacisor,which
had been sold for reducing the waistline.The Relaxacisor produced electrical shocks to the body
through contact pads.FDA took legal action against the distributor to stop the sale of the device
on the grounds that it was dangerous to health and life.
     Obviously,most of the devices on the market have never been the subject of court proceedings
(法律诉讼),and new devices appear continually.Before buying,it is up to the consumer to judge
the safety or effectiveness of such items.1．It can be inferred that the ads mentioned in the text are________.A．objective
B．costly
C．unreliable
D．illegal2.Which of the following is TRUE according to the text?A．The court is in charge of removing dangerous products.
B．New products are more likely to be questionable.
C．The production of a device must be approved by FDA.
D．The promoters usually just care about profits.3．FDA can ask for the proof of safety and effectiveness of a product________.A．if it is a drug
B．if it is a device
C．if its consumers make complaints
D．if its distributors challenge FDA"s authority4．The Relaxacisor is mentioned as________.A．a product which was designed to produce electricity
B．a product whose distributor was involved in a legal case
C．a successful advertisement of a beauty product
D．an example of a quality beauty product5．The author intends to________.A．make consumers aware of the promoters" false promises
B．show the weakness of the law on product safety
C．give advice on how to keep young and beautiful
D．introduce the organization of FDA

题型：期末题难度：| 查看答案

阅读理解     Today, people all over the world are moving out of small villages in the country to go and live in big,
noisy cities. They are moving from the peaceful hills, mountains, fields, rivers and streams of the
countryside to the busy world of streets, buildings, traffic and crowds. This movement from rural(乡下的) areas to urban areas has been going on for over two hundred years.
     In many countries, the main reason people come to live in towns and cities is work. After one or two
large factories have been built in or near a town, people come to find work, and soon an industrial area
begins to grow. There is usually a_residential_area nearby, too. The families of these workers need
schools, hospitals and shops, so many people come to live in the area to provide these services and a city grows.
     In every major city in the world, there is a business district where the big companies have their main
offices. In the United States, this area is usually in the city center downtown. It is here that you can see
many huge skyscrapers(摩天大楼)and office blocks. The people who work here often travel a long way
to work each day. Many of them live in the suburbs of the city, far away from the industrial area and the
city center. Some suburbs are very pleasant, with nice houses and big gardens. There are usually parks for children to play in and large department stores where you can buy all you need.
     But what is the future of the big cities? Will they continue to get bigger and bigger? Perhaps not. Some major cities have actually become smaller in the last ten years, and it is quite possible that one day we will
see people moving out of the major cities and back into smaller towns and villages.1. The underlined phrase "a residential area" means an area________.A. where people can buy things
B. which is suitable for living in
C. where people can do business
D. which is near a city center2. Why do people move to live in cities or towns?A. Because they can live more comfortably there.
B. Because they like noisy life better than peaceful life.
C. Because they mainly want to find work there.
D. Because they are sure of having a better life there.3. Which of the following statement is NOT true about the business district?A. Big companies usually have their main offices in the business district.
B. People usually work and live in the business district.
C. A business district usually lies in the city center downtown.
D. Nearly every major city has its own business district.4. In the United States, many people work in the center of a big city________.A. and live there
B. but live in the suburbs of the city
C. and live in another city
D. but live in rural areas5. We can infer that this movement from rural to urban areas ________.A. has been going on for more than 2,000 years
B. will surely continue in the future
C. may not continue in the future
D. has now stopped already

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