Who has caused some problems amongst the team in the past________

31. Which of the following statements is true according to the passage？ ()

A. AIDS is a disease for which a cure has been found.

B. AIDS is a disease which has just been found.

c. AIDS is a disease which has existed for a long time.

D. AIDS is a disease which spreads very slowly.

32. Who is easily infected with AIDS？ ()

A. People who use drugs.

B. People who visit prostitutes.

C. Patients who stay in hospital.

D. All of the above.

33. In WHO' s opinion, what will help most effectively in fighting against the spread of AIDS？ ()

A. More education.

B. More medicines.

C. More doctors.

D. More equipment.

34. From the passage , we can see that the writer is not happy about ().

A. the education the general public get on AIDS

B. the education the medical staff get on AIDS

C. the TV programmes on AIDS

D. the newspaper articles on AIDS

35. Which of the following statements is NOT true according to the passage？ ()

A. It is not enough only to educate the general pubic.

B. There are some hospitals in some parts of the world which do not accept AIDS patients.

C. Great care has been taken to prevent the spread of AIDS everywhere in the world now.

D. More money and resources are needed to control the spread of AIDS

body after 120 days. Because the parasite cannot travel to a new generation of red blood cells, any fever that develops in a person more than 120 days after that person has moved to a malaria-free region is not due to the malarial parasite. Which of the following, if true, most seriously weakens the conclusion above？

A．The fever caused by the malarial parasite may resemble the fever caused by flu viruses.

B．The anopheles mosquito, which is the principal insect carrier of the malarial parasite, has been eradicated in many parts of the world.

C．Many malarial symptoms other than the fever, which can be suppressed with antimalarial medication, can reappear within 120 days after the medication is discontinued.

D．In some cases, the parasite that causes malarial fever travels to cells of the spleen, which are less frequently eliminated from a person" s body than are red blood cells.

E．In any region infested with malaria-carrying mosquitoes, there are individuals who appear to be immune to malaria.

in arrival. Our current order for stationery is already 6 days overdue. We have a number of valued customers who are being put to some inconvenience. There seems to be no obvious reason why your normally prompt deliveries should become so unreliable. I would be obliged if you would look into this matter as soon as possible. Ours is a small, family business in a town. We depend very much upon the good will of our customers. I' m sure you will settle this problem at your convenience as soon as possible. Your faithfully, Han Lu Mr．Han writes to complain about 46__________ of the ordered goods． His order for stationery has already been late for47__________ when this letter is being written． Mr．Han feels it a pity that the 48__________ deliveries have become so unreliable． According to Mr．Han，this incident has caused 49__________to his customers，upon whose 50__________his small family—run business depends． __________

More and more people (1){A. must; B. have; C. had; D. has} to install burglar alarms in their houses if they want to get insurance. Insurance companies have been asking people in certain areas to install the alarms before they give them insurance for the past year. This is (2){A. due; B. caused; C. because; D. because of} to the increasing crime in some parts of the country. This can be a problem for people (3){A. which; B. what; C. who; D. ---}are struggling to make both ends (4){A. go; B. come; C. meet; D. loose}. The alarms, which can be very expensive, need to be installed by an electrician. It is estimated that 20% of homes have alarms installed, and that another 20% of people plan (5){A. to have them installed; B. to have them installing; C. to have been installing them; D. to install them} but have not installed them yet.

A.A. what

B.B. that

C.C. which

D.D. who

t is continually being altered as climates change, as new organisms evolve, as animals or plants spread to new areas. But the alterations have in the past, for the most part, been slow, whereas with the arrival of civilized man, their speed has been multiplied much: from the evolutionary time-scale, where change is measured by periods of ten or a hundred thousand years, they have been transferred to the human time-scale in which centuries and even decades count.

Everywhere man is altering the balance of nature. He is facilitating the spread of plants and animals into new regions, sometimes deliberately, sometimes unconsciously. He is covering huge areas with new kinds of plants, or with houses, factories, slag heaps and other products of his civilization. He gets rid of some species on a large scale, but favors the multiplication of others. In brief, he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million years.

Many of these changes which he has brought about have had unforeseen consequences. Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade？ Or that provision of pot cacti for lonely settlers' wives would have led to Eastern Australia being covered with forests of prickly pears？

Who would have predicted that the cutting down of forests on the Adriatic coast, or in parts of Central Africa, could have reduced the land to a semi-desert with the very soil washed away from the bare rock？ Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa, measles into Ocean, AIDS around the whole world？

These are spectacular examples, but examples on a smaller scale are everywhere to be found. We made a nature sanctuary for rare birds, providing absolute security for all species ; and we may find that some common and hardy kind of birds multiplies beyond measure and drive away the rare kinds in which we are particularly interested. We see, owing to some little change brought about by civilization, the starting spread over the English countryside in hordes. We improve the yielding capacities of our cattle; and find that how they exhaust the pastures which were sufficient for less demanding stock. We gaily set about killing the carnivores that disturb our domestic animals, the hawks that eat our fowls and game-birds; and find that in so doing we are also removing the brake that restrains the multiplication of mice and other little rodents that gnaw away the farmers' profits.

The author's concern with the balance of nature, as evidenced by this passage, is best defined as______.

A．intense and objective

B．conscientious but humorless

C．sincere and subjective

D．deep but dry

ky to walk under a ladder — even if it means 【B2】 the pavement into a busy street! 【B3】 you must pass under a ladder you can 【B4】 bad luck by crossing your fingers and 【B5】 them crossed until you have seen a dog. 【B6】 , you may lick your finger and 【B7】 a cross on the toe of your shoe, and not look again at the shoe until the 【B8】 has dried. Another common 【B9】 is that it is unlucky to open an umbrella in the house — it will either bring 【B10】 to the person who opened it or to the whole 【B11】 . Anyone opening an umbrella in fine weather is 【B12】 , as it inevitably brings rain! The number 13 is said to be unlucky for some, and when the 13th day of the month 【B13】 on a Friday, anyone wishing to avoid a bad event had better stay 【B14】 . The worst misfortune that can happen to a person is caused by breaking a mirror, 【B15】 it brings seven years of bad luck! The superstition is supposed to 【B16】 in ancient times, when mirrors were considered to be tools of the gods.

Black cats are generally considered lucky in Britain, even though they are 【B17】 witchcraft. It is 【B18】 lucky if a black cat crosses your path — although in America the exact opposite belief prevails. Finally, a commonly held superstition is that of touching wood 【B19】 luck. This measure is most often taken if you think you have said something that is tempting fate, such as "my car has never 【B20】 , touch wood？"

【B1】

A．broadly

B．widely

C．quickly

D．speedily

TV’s Influence On Our Daily Life

1)TV not only presents us a wonderful world, but also brings some changes to our daily life.

2)It is true that TV has the value of giving complete relaxation

3)Now we can see that TV has caused enormous problems along with its benefits.

into and work in city.This problem has caused wide public concern in most cities all over the world.An investigation shows that many emigrants think that working at city provide them with not only a higher salary but also the opportunity of learning new skills

A.that

B.which

C./

D.as