[单项选择]It’s hot now in Afghanistan, where 35% of the population is under-fed. But soon it will be cold, and many of the country’s roads will become inaccessible because of snow and landslides, making it difficult to get food to market.
Knowing these things gets Stacy McCoy out of bed every morning and out into the countryside, visiting Afghani women and farmers to offer new agricuhural techniques and hardier seeds. She also works to improve their marketing skills so that they can be exposed to new ways To sell goods in the marketplace. The marketing efforts have helped organize the women and farmers into teams so that they have more food to offer collectively and can work more closely together to share their knowledge.
McCoy is one of many American scientists who have devoted their careers to international development in the name of making the world a better place. "It can be hard living away from family and that is a choice sometimes going into international work, but I’m pre
A. snow and landslides will become unpredictable
B. cold weather will reduce the productivity
C. many roads will be closed to traffic
D. more people will suffer hunger
[简答题]
Despite wars, famines, and epidemics, Earth’s population is
booming ahead to new records—with no end in sight.
Every day,
the world adds enough people to populate a medium-sized city in the US. In one
month, the number of new-world citizens equals the population of New York
City.
Every year, there are 90 million more mouths to feed, more
than the total population of Germany.
Several factors are
propelling this rapid growth, including an element that is often overlooked: the
huge number of teenagers who are becoming mothers, particularly in the countries
of sub-Saharan Africa.
In four African nations—Niger, Mali,
Sierra Leone, and Ivory Coast—1 out of every 5 adolescent females of
childbearing age has a baby annually.
The US Bureau of the
Census says this high rate of motherhood among teens has helped to maintain the
high pace of births across most of the African continent. By starting a family
early, a typical woman in Som
[单项选择] Many now have been breathing hot flames at our industry and so I thought it would be time to say my piece this week, after all, we in the business cannot deny that it has been a rough spring for news paper editors and reporters.’’ Ethical scandals great and small have soiled newsrooms from coast to coast. Everyone knows about the profound deceits of Jayson Blair at The New York Times, and the "Writergate" controversy involving Rick Bragg, which led to the departure of the two top editors at the paper. Other misdeeds have ranged from two reporters at The Salt Lake Tribune selling information to The National Enquirer, to a food writer for The Hartford Courant fired for plagiarizing recipes. Are newspaper standards going to pot
Some say ethics are worse than ever or are they The past is filled with people running photos of wrestlers in the sports section in exchange for money. In fact, ethical breaches may be less of a problem than 20 years ago. A 1,t of newspapers are cutting co
A. newsrooms are suffering from a decline in standards
B. there are too many ethical scandals going on in newspapers
C. there is a perception that newspapers should do more to correct mistakes
D. this has been a rough time for newspapers and many are wondering what is wrong
[单项选择]One major obstacle to economic development is population growth. The populations of most developing countries grow at a rate much faster than that of in dustrialized countries. One reason for this growth is the high crude birth-rate—the number of live births per 1,000 people.
A. to
B. The populations
C. that
D. live births
[填空题]The survey shows that green food is becoming (popular) _______than traditional food.
[简答题]As a result, the modern world is increasingly populated by intelligent robots whose presence we barely notice but whose universal existence has removed much human labor. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with far greater precision than highly skilled physicians can achieve with their hands alone. But if robots are to reach the next stage of laborsaving utility, they will have to be able to make at least a few decisions for themselves.
Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year 2010, researchers lately have begun to extend that forecast by decades if not centuries.
[单项选择]A. The air pollution. B. The large population.
C. The destruction of forest. D. The Industrial Revolution.
[单项选择]Several years ago, as a measure to reduce the population of gypsy moths, which depend on oak leaves for food, entomologists introduced into many oak forests a species of fungus that is poisonous to gypsy moth caterpillars. Since then, the population of both caterpillars and adult moths have significantly declined in those areas. Entomologists have concluded that the decline is attributable to the presence of the poisonous fungus.
Which one of the following, if true, most strongly supports the conclusion drawn by the entomologists
A. A strain of gypsy moth whose caterpillars are unaffected by the fungus has increased its share of the total gypsy moth population.
B. The fungus that was introduced to control the gypsy moth population is poisonous to few insect species other than the gypsy moth.
C. An increase in numbers of both gypsy moth caterpillars and gypsy moth adults followed a drop in the number of some of the species that prey on the moths.
D. In the past several years, air pollution and acid rain have been responsible for a substantial decline in oak tree populations.
E. (E) The current decline in the gypsy moth population in forests where the fungus was introduced is no greater than a decline that occurred concurrently in other forests.
