单选题If a person drinks silver tea during his golden years, we can say that

单选题{{B}}Passage One{{/B}} Although no one is certain why migration occurs, there are several theories. One theory claims that prehistoric birds of the Northern Hemisphere were forced south during the Ice Age. As the glaciers melted, the birds came back to their homelands, spent the summer, and then went south again as the ice advanced in winter. In time, the migration became a habit in spite of the disappearance of glaciers. Another theory proposes that the ancestral home of all modern birds was the tropics. When the region became overpopulated, many species were crowded north. During the summer, there was plenty of food, but during the winter, scarcity forced them to return to the tropics. A more recent theory suggests a relationship between increasing daylight and the stimulation of certain glands(腺)in the birds' bodies that may prepare them for migration. One scientist has been able to cause midwinter migrations by exposing birds to artificial periods of daylight. He has concluded that changes occur in the bodies of birds due to seasonal changes in the length of daylight.

单选题The ______ of emotional and psychiatric disorders that can prompt a person to seek therapy is wide.

单选题The food was divided ______ according to(he age and size of the child.(2007年中国人民大学考博试题)

单选题Space Shuttle Project is one of the first huge-typed spaceflight instruments used for many times in the world, organized by American National Aviation andSpaceflight Bureau, the main researches of (1) are researching and making the system of space shuttle, suggesting and choosing (2) and landing ports,deciding the scheme of reclaiming the roll booster of solid rocket, (3) the establishment of repairing the roll booster, and rebuilding and expanding the building of the (4) and controlling system. At the beginning of 1969, the United States set up a group that specially researched the development direction of spaceflight with (5) for the next stage, (6) by deputy president. After (7) and research, it suggested that an aerocraft with great benefits in (8) should be made, eg (9) the spaceflight being its leading stanchion. In this project, five orbit implements were prescribed to be made, (10) " Exploitation", " Columbia", " Challenger","Discovery" and "Atlands". In 1970, spaceflight got into an all-round (11) of research and manufacture. The whole-project had to delay more than three years. Five orbit implements were (12) to be four and flight experiment for six times was also decreased for four, (13) the number of production was cut down, according to the original scheme. In April 1971 this (14) was decided that Kennedy Space Centre was used for the launching and landing port for space shuttles, and Edwards Air Base was used for the (15) landing port. In February 1977,"Exploitation" Orbit Implement started to have entering and landing experiment sin Edwards Air Base. From May 12, 1981 to July 4, 1982, "Columbia" Space Shuttle successfully finished four flight experiments for research and manufacture, (16) meant that the (17) and manufactures were over in (18) form. It (19) about 12 years and cost more than 75 billion US dollars to finish the whole project. On November 11, 1990, space shuttles began to fly for (20) .

单选题Question 16-20 are based on the following dialogue:

单选题Which of the following about flash memory is not TRUE according to the text? A．It is non-volatile B．It is erasable C．It is reprogramable D．It is reliable

单选题(2006)It was because the applicant was too conceited_____he failed in the interview.

单选题Comparatively speaking, of the three civil servants, the girl with long hair is______.

单选题There has been a great deal of ______ surrounding the closure of the hospital.

单选题I can't leave ______ six. A. when B. from C. before

单选题To understand the marketing concept, it is only necessary to understand the difference between marketing and selling. Not too many years ago, most industries concentrated primarily on the 1 production of goods, and then 2 on "persuasive salesmanship" to move as much of these goods as possible. Such production and selling focuses on the needs of the seller to produce goods and then 3 them into money. Marketing, on the other hand, focuses on the wants of consumers. It begins with first analyzing the 4 and demands of consumers and then producing goods that will 5 them. This eye-on-the-consumer 6 is known as the marketing concept, which simply means that instead of trying to sell 7 is easiest to produce or buy for resale, the makers and dealers first try to find out what the consumer wants to buy and then go 8 making it available for purchase. Every 9 —design, production, distribution, promotion—is made according to consumer demand. This concept does not 10 that consumer satisfaction is given 11 over profit in a company. There are always two 12 to every business activity—the firm and the customer—and each must be satisfied before trade 13 . Successful merchants and producers, 14 , recognized that the surest route to profit is 15 understanding customers. This concept has been recognized in such slogans as "Have It Your Way", and "Your are the boss". A good example of the importance of satisfying the consumer 16 itself in mid-1985, when Coca Cola changed the 17 of its drink. The non-acceptance of the change by a significant 18 of the public brought about a quick 19 of the Classic Coke, which was then marked alongside the new. King Customer 20 .

单选题We can infer from the text that the author believes

单选题In Guangzhou, capital of South China's Guangdong Province, Guangzhou Baiyun International Airport resumed its international flights to Singapore, Malaysia, Thailand, the Philippines and other Southeast Asian nations and regions early this month, said an airport official yesterday. And the airport's flow of international passengers for July has reached 80 percent of the figure for the corresponding month of the previous year. Guangzhou Baiyun International Airport had to cancel some international services to Southeast Asian nations and regions because of the outbreak of SARS beginning in April, the official said. The official predicted his airport's international service would return to normal operation and handle even more international passengers in August. Currently, the Guangzhou airport is operating 22 international flights to 20 foreign metropolises. And nine foreign airlines have resumed their international flights to the airport.

单选题A. machine B. headache C. chemistry D. character