During the last thirty years, the
international economy has experienced a basic change. Improvements in the
Internet and other communications have had important effects on world markets.
Faster methods of transport from one place to another have made the world seem
smaller to the businessmen. As a result, the world no longer. consists of a
number of separate economies under the control of different nations. Instead,
the nations have been integrated into a single economy, and the integration is
becoming more and more complete every year. For the first time in history, we
can truly speak of a global economy. The most dramatic example
of this integration was the oil crisis of 1973 and 1974. It came as a great
surprise to the public in the industrial nations to discover that they depended
so heavily on imported oil. However, the bes A. the dependence of the industrial countries on imported oil B. the fundamental change in world economy C. the expansion of international corporations D. the Internet and world economy
[单项选择] Passage One
For more than thirty years after
astronauts first set foot on the Moon, scientists have been unable to unravel
the mystery of where the Earth’s only satellite came from. But now there is
direct evidence that the Moon was born after a giant collision between the young
Earth and another planet. Previous studies of rocks from the
Earth and the Moon have been unable to distinguish between the two, suggesting
that they formed from the same material. But this still left room for a number
of theories explaining how—for example, that the Moon and Earth formed from the
same material at the same time. It was even suggested that the early Earth spun
so fast it formed a bulge that eventually broke off to form the Moon.
Franck Poitrasson, and his colleagues at the Swiss Federal Institute of
Technology have compared Moon rocks with A. the differences between the Earth and the Moon B. how man manages to set foot onto the Moon C. the collision between the Earth and the Moon D. the origin of the Moon
[填空题]Thirty years ago, anyone blaming loneliness for physical illness would have been laughed at. But as scientists studied different populations, loneliness kept emerging as a risk (26) . In one study, California researchers followed 4700 (27) of Alameda County for ten years, starting in 1965. At first, the (28) reported their key sources of companionship and estimated the time they (29) each other. During the study, the people who reported the least social (30) died at nearly three times the rate of those reporting the most. The source of companionship didn’t matter, but time spent with others was (31) . Since then, researchers have studied men, women, soldiers and students from countries all over the world. And the same (32) keeps emerging. Women who say they feel isolated go on to die of cancer at several times the expected rate. College students who report "strained and cold" relationships with their parents suf
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