In 1957 a doctor in Singapore noticed that hospitals were treating an unusual number of influenza-like cases. Influenza is sometimes called “flu“ or a “bad cold“. He took samples from the throats of patients in his hospital and was able to find the virus of this influenza. There are three main types of the influenza virus. The most important of these are type A and B, each of them having several subgroups. With the instruments at the hospital, the doctor recognized that the outbreak was due to a virus in group A, but he did not know the subgroup. Then he reported the outbreak to the World Health Organization in Geneva. WHO published the important news alongside reports of a similar outbreak in Hong Kong, where about 15-20 percent of the population had become ill. As soon as the London doctors received the package of throat samples, doctors began the standard tests. They found that by reproducing itself with very high speed, the virus had grown more than a million times within two days. Continuing their careful tests, the doctors checked the effect of drugs against all the known subgroups of virus type A. None of them have any protection. This, then, was something new, a new influenza virus, against which the people of the world had no help whatever. Having found the virus they were working with, the two doctors now dropped it into the noses of some specially selected animals, which get influenza much as human beings do. In a short time the usual signs of the disease appeared. These experiments proved that the new virus was easy to catch, but that it was not a killer. Scientists, like the general public, call it simply Asian flu. The first discovery of the virus, however, was made in China before the disease had appeared in other countries. Various reports showed that the influenza outbreak started in China, probably in February 1957. By the middle March it had spread all over China. The virus was found by Chinese doctors early in March. But China is not a member of the WHO and therefore does not report outbreaks of disease to it. Not until two months later, when travelers carried the virus into Hong Kong, from where it spread to Singapore, did the news of the outbreak reach the rest of the world. By this time it was well on its way around the world.

The doctor in Singapore performed a valuable service by______.

A．finding the subgroup of the virus

B．developing a cure

C．keeping his patients apart from others

D．reporting the outbreak to Geneva

One interesting thing about the virus in the story was that it______.

A．was especially weak

B．was similar to other viruses

C．could reproduce with great speed

D．had samples frozen and packed in dry ice

The type of influenza discussed in this story______.

A．had been classified years before

B．could not be cured by any known drug

C．could be prevented from spreading

D．could not affect adults

The experiments in giving the virus to animals proved that this type of influenza was easy to catch______.

A．and could possibly cause death

B．and had rather mild effects

C．but was not deadly

D．and did not have the usual signs

One reason why the outbreak of the disease was not discovered sooner was that

A．China did not belong to WHO.

B．doctors in Asia did not recognize the disease

C．reporting procedures were not good enough

D．the people who caught it were travelers

Actually, much of what was being presented on the stage at that time was______and experimental. positive negative sensitive innovative

They believe that businesses have to find new ______and take advantage of every selling technique that might lead people to buy. managers salespersons investors customers

Many modern TV viewers complain about______that have constantly interrupted and destroyed their viewing the programs. criminals finals financials commercials

I told him that he might get into the boss’s______if he could accomplish a few things for the good of the company. reference confidence competence persistence

The growth of their economy is______, not in reality. Many of their statistics are false. in figures in fact in the red in form

The Chairman seldom talked much at these meetings, but his gestures and noises spoke forums values volumes horrors

Apart from its impact on commercial and industrial structures and procedures, the rapid development of the global communications system is apparently ______ barriers between peoples at a pace neither governments nor international agencies can hope to control. setting up triggering off breaking up breaking down

The officer is gallant in his behavior toward his young secretary. brave pertinent obedient courtly

Grocery prices were boosted again last month. attacked stabilized fixed raised

The outcry against the government’s policies will subside only if a compromise is reached in the assembly. die down succeed proceed dislodge

Double Eagle II, the first transatlantic balloon, was greeted by avid crowds in France. eager surging creative vigorous

Mary McCarthy’s satires are couched in a prose that has a classic precision. fused prefaced standardized expressed

Cactus plants have spines that prevent animals from nibbling them. ruining reaching climbing gnawing

As a general rule, September is the worst month of the year for hurricanes in the Gulf. Normally On rare occasions Invariably Sometimes

I always think of books with unutterable feelings, being deeply indebted to them, as I am, for the warmth they have brought me. preferred mixed profound dissatisfied

With the change of red lights, there are long queues of vehicles that wait while a few people who walk across the zebra. wait...walk waiting...walking waiting... walk wait... walking

Catching sight of her old friend Brown, Mary moved for him to come over and sit in a seat next to her. signed swayed twisted signaled

Martha has made up her mind to buy her favorite furniture, disregard how much money she would pay. no matter how much it costs no matter how much does it cost no matter how it costs no matter how does it cost

Having the highest marks in her class, a scholarship was offered her by the Department. she was offered a scholarship by the Department a scholarship was offered to her by the Department the Department has a scholarship to offer her the Department offered her a scholarship

Lack government support, they had to approach sponsors, organizers, and musicians on their own — at first, she claims, in her country. Lacks Lacked Lacking A lack of

The influenza outbreak in this story began in______.

Without counting the subgroups, there are______type(s) of influenza.

The doctor in Singapore performed a valuable service by______.

One interesting thing about the virus in the story was that it______.

The type of influenza discussed in this story______.

The experiments in giving the virus to animals proved that this type of influenza was easy to catch______.

One reason why the outbreak of the disease was not discovered sooner was that

Once an influenza outbreak is started, for its spread around the world takes about

To keep track of a disease such as influenza, WHO must have______.

One thing necessary for discovering influenza outbreaks is______.