__________[A] development[B] origin[C] consequence[D] instrument

Feasibility studies occur in which life cycle phase (s)？

A.Conceptual

B.Conceptual or Development

C.Execution

D.Preliminary planning

E.any life cycle phase

Among the devastating consequences of AIDS has 【21】______ its epidemic spread in the developing world. The disease has caused 【22】______ suffering, debilitation, loss of life and disruption of family, social and economic 【23】______ Because of the considerable expense and logistical difficulty in providing antiviral drugs to populations 【24】______ with the Human Immunodeficiency Virus 【25】______ the world, the biomedical community is looking towards vaccines to help solve this compelling problem.

The search for an AIDS vaccine began more than 15 years ago with great 【26】______ and high expectations. With the 【27】______ of the Human Immunodeficiency Virus (HIV) as the cause of AIDS, it seemed that a 【28】______ would follow closely behind. But despite a large concerted effort, the problem has proven more difficult than 【29】______ , and progress has not 【30】______ the 【31】______ hopes. Here I review the 【32】______ scientific obstacles confronting the development of an effective HIV vaccine, and I consider 【33】______ strategies to overcome these obstacles.

It is instructive to consider the circumstances that have 【34】______ to past successes in vaccine development. The smallpox vaccine is 【35】______ the most successful inventions in the history of 【36】______ Why, 200 years ago, without the benefit of modern biotechnology, did the smallpox vaccine succeed so readily while an AIDS vaccine 【37】______ elusive？ The answer lies in an experiment of nature that provided, to an astute observer, a clear direction for smallpox vaccine development. In this classic story of 【38】______ discovery, Edward Jennet noticed that milk maids who had previously contracted cowpox were 【39】______ to smallpox infection. This observation was the critical event leading to the finding that the cowpox virus cross-reacted immunologically with the smallpox virus and could 【40】______ be used to protect against smallpox.

【21】

A．on

B．with

C．been

D．about

Part Ⅱ Reading Comprehension (Skimming and Scanning)

Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet I. For questions 1-7, choose the best answer from the four choices marked A), B), C) and D). For questions 8-10, complete the sentences with the information given in the passage.

Rich Man, Poor Man

Gluers and sawyers from the furniture factories in Galax near the mountains of Virginia lost their jobs last year when American retailers decided they could find a better supplier in China. At the other end of the furniture industry Robert Nardelli lost his job this month when Home Depot decided it could find a better chief executive in his deputy. But any likeness ends there. Mr. Nardelli's exit was as extravagantly rewarded as his occupation of the corner office had been. Next to his $ 210 million severance pay, the redundant woodworkers packages were mean to the point of provocation (激怒).

That's the way it goes all over the rich world. If you look back 20 years, the total pay of the typical top American manager has increased from roughly 40 times the average--the level for four decades -- to 110 times the average now. These are the glory days of global capitalism. The mix of technology and economic integration transforming the world has created unparalleled prosperity. In the past five years the world has seen faster growth than at any time since the early 1970s. Having joined the global labor force, hundreds of millions of people in developing countries have won the chance to escape squalor (肮脏) and poverty. Hundreds of millions more stand to join them.

That promises to improve the lot of humanity as a whole incalculably. But in the rich world labor's share of GDP has fallen to historic lows, while profits are soaring. A clamor is abroad that Mr. Nardelli and his friends among the top hundredth -- or even the top thousandth -- of the population are seizing the lion's share of globalization's gains. Meanwhile everyone else -- not just blue-collar factory workers but also the wider office -- working middle class -- shuffles along, grimly waiting for the next round of cost-cuts.

Fear and clothing

Signs of a backlash abound. Stephen Roach, the chief economist at Morgan Stanley, has counted 27 pieces of anti-China legislation in Congress since early 2005. The German Marshall Fund found last year that, although most people still say they favor free trade, more than half of Americans want to protect domestic companies from foreign competition even if that slows economic growth. In a hint of labor's possible resurgence, the House of Representatives has just voted to raise the federal minimum wage for the first time in a decade. Even Japan is alarmed about inequality, stagnant (不景气的) wages and jobs going to China. Europe has tied itself in knots trying to "manage" trade in Chinese textiles.

Should you blame your computer？

The panic comes in part from a rush to lump all the blame on globalization. Technology -- an even less resistible force -- is also destroying white- and blue-collar tasks in a puff of automation and may play a bigger role in explaining rising wage inequality. The distinctions between technology and globalization count, if only because people tend to welcome computers but condemn foreigners (whether as competitors or immigrants). That makes technology easier to defend.

For economists, the debate about whether technology or globalization is responsible for capital's rewards outpacing those of labor is crucial, complicated and unresolved. One school, which blames globalization, argues that the rocketing profits and sluggish middling wages of the past few years are the long-lasting results of trade, as all those new develo

A．seemed to be redundant

B．irritated them

C．satisfied them

D．was close to Mr. Nardelli's