The guide conducted us around the ruins of the ancient city.（英译汉)

A．the research on cloning humans should be carried out to help infertile couples

B．regulations should be made to guide the science of cloning humans onto the right track

C．the research on cloning humans should not be conducted so recklessly

D．Antinori is a great scientist who pushes reproductive biology to the limits

Questions 16 to 20are based on the following passage

A weather map is an important tool for geographers. A succession of three or four maps presents a continuous picture of weather changes. Weather forecasters are able to determine the speed of air masses and fronts; to determine whether an individual pressure area is deepening or becoming shallow and whether a front is increasing or decreasing in intensity. They are also able to determine whether an air mass is retaining its original characteristics or taking on those of the surface over which it is moving. Thus, a most significant function of the map is to reveal a synoptic picture of conditions in the atmosphere at a given time.

All students of geography should be able to interpret a weather map accurately. Weather maps contain an enormous amount of information about weather condition existing at the time of observation over a large geographical area. They reveal in a few minutes what otherwise would take hours to describe. The United States Weather Bureau issues information about approaching storms, floods, frosts and all climatic conditions in general. Twice a month it issues a 30-day "out-look" which is a rough guide to weather conditions likely to occur over broad areas of the United States. These 30-day outlooks are based upon an analysis of the upper air levels which often set the stage for the development of air masses, fronts, and storms.

Considerable effort is being exerted today to achieve more accurate weather predictions. With the use of electronic instruments and earth satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations. Extensive experiments are also in progress for weather modification studies. But the limitations of weather modification have prevented meteorological results except in the seeding of super？cooled, upslope mountainous winds which have produced additional rainfall on the windward side of mountain ranges. Nevertheless, they have provided a clearer understanding of the fundamentals of weather elements.

16. The observation of weather conditions by satellites is advantageous because it_______.

A. enables man to alter the weather

B. makes weather prediction easier

C. gives the scientist information not obtained readily otherwise

D. uses electronic instruments

17 . One characteristic of weather maps NOT mentioned by the author in this passage is

A. fronts 　　B. thermal changes

C. Frost 　　D. wind speed

18. The thirty-day forecast is determined by examining_______.

A. daily weather maps B. upper air levels

C. satellite reports D. changing fronts

19. At the present time, experiments are being conducted in_____

A. 30-day "outlook" B. controlling storms

C. controlling weather D. determining density of pressure groups

20. Artificial rainmaking has been most successful in the_______.

A. lake area

B. western slope of mountains

C. grass lands

D. windward side of mountains

A.will be

B.is

C.to be

D.be

sun", he was only partly right. Societies have always had their hierarchies, with some group perched at the top. In the Indian state of Bihar the Ranveer Sena, an upper-caste private army, even killed to stay there.

By that measure class in Britain hardly seems entrenched (根深蒂固的). But in another way Orwell was right, and continues to be. As a new YouGov poll shows, Britons are surprisingly alert to class—both their Own and that of others. And they still think class is sticky. According to the poll, 48% of people aged 30 or over say they expect to end up better off than their parents. But only 28% expect to end up in a different class. More than two-thirds think neither they nor their children will leave the class they were born into.

What does this thing that people cannot escape consist of these days？ And what do people look at when decoding which class someone belongs to？ The most useful identifying markers, according to the poll, are occupation, address, accent and income, in that order. The fact that income comes fourth is revealing: though some of the habits and attitudes that class used to define arc more widely spread than they were, class still indicates something less blunt than mere xvealth.

Occupation is the most trusted guide to class, but changes in the labour market have made that harder to read than when Orwell was writing. Manual workers have shrunk along with farming and heavy industry as a proportion of the workforce, while the number of people in white-collar jobs has surged. Despite this striking change, when they were asked to place themselves in a class, Brits in 2006 huddled in much the same categories as they did when they were asked in 1949. So, jobs, which were once a fairly reliable guide to class, have become misleading.

A survey conducted earlier this year by Expertian shows how this convergence on similar types of work has blurred class boundaries. Expertian asked people in a number of different jobs to place themselves in the working class or the middle class. Secretaries, waiters and journalists were significantly more likely to think themselves middle-class than accountants, computer programmers or civil servants. Many new white-collar jobs offer no more autonomy or better prospects than old blue-collar ones. Yet despite the muddle over what the markers of class are these days, 71 % of those polled by YouGov still said they found it very or fairly easy to figure out which class others belong to.

In addition to changes in the labour market, two other things have smudged the borders on the class map. First, since 1945 Britain has received large numbers of immigrants who do not fit easily into existing notions of class and may have their own pyramids to scramble up. The flow of new arrivals has increased since the late 1990s, multiplying this effect.

Second, barriers to fame have been lowered. Britain's fast-growing ranks of celebrities—like David Beckham and his wife Victoria—form. a kind of parallel aristocracy open to talent, or at least to those who are uninhibited enough to meet the requests of television producers. This too has made definitions more complicated.

But many Brits, given the choice, still prefer to identify with the class they were born into rather than that which their jobs or income would suggest. This often entails pretending to be more humble than is actually the case: 22% of white-collar workers told YouGov that they consider themselves working class. Likewise, the Expertian survey found that one in ten adults who call themselves working class are among the richest asset-owners, and that over half a million households which earn more than $191,000 a year say they are working class. Pretending to be grander than income and occupation suggest is rarer, though it happens too.

A．Because there was stronger class consciousness in India.

B．Because more people hope to end up in a higher class.

C．Because people expect to gain more wealth than their parents.

D．Because Britons are still conscious of their class status.

A have conducted

B have been conducted

C had conducted

D had been conducted

The school conducted a(n) __________ investigation on the accident.

A、positive

B、extensive

C、negative

Listening activities can only be conducted with the whole class.()

参考答案：错误

A.suit guide

B.uild disguise

C.guide guidman

He conducted these instructional sessions with ()and humor.

A、animation

B、animal

C、advance

D、anxious