Although the weathermen’s forecasts for a month ahead are only little better than guesswork, they are now making long-term forecasts into the next century with growing confidence. The main trend in the world’s climate in the coming years will, scientists say, be a predictable result of man’s activities.
At the start of the industrial revolution nearly two centuries ago, man set off a big experiment in planetary engineering. Unaware of what he was doing, he spared no thought for the consequences. Today the possible outcome is alarmingly clear, but the experiment is unstoppable. Within the lifetime of many of us, the Earth may become warmer than it has been for a thousand years. By the middle of this century it may be warmer than it has been since the last Ice Age.
A warmer climate may seem welcome, but it could bring many dangers: damages to crops in the world’s main food-producing areas, famine(饥荒),  economic instability, civil unrest and even war.
In the much longer term, melting of the great ice-caps of Greenland and Antarctica could raise sea-levels throughout the world. The average sea-level has already risen a foot since the turn of the last century, and if the ice-caps disappear completely, it would rise by nearly 200 feet. Complete melting might take many centuries, but even a small increase in sea-level would threaten low-lying parts of the world such as the Netherlands.
44. Long-term weather forecasts beyond the year 2050 may seem strange because ____.
A. none of us will be alive then
B. weathermen can even forecast next month’s weather correctly
C. weathermen can forecast much better than they used to
D. no one can stop engineering experiments
45. Weathermen believe that our future climate will be the direct result of ____.
A. the big scientific experiment       B. clever long-term forecasts
C. the melting of the ice-caps          D. planets changing course
46. One of the results of a warmer world climate could be ____.
A. an increase in food production
B. greater co-operation between countries
C. the death of millions of people from starvation
D. a reduction in the amount of oil we use
47. Scientists are fairly sure that by the year 2050, _______.
A. the sea-level will have risen obviously
B. there will have been the Third World War
C. most countries will have been flooded
D. the polar ice-caps will have melted completely

No one could have failed to be moved had he watched the live televised volleyball game between the Chinese and Cuban women’s teams. As we sat before the television set, with our eyes fixed on the screen, we experienced every kind of feeling. When the two teams played neck and neck, we were on pins and needles, anxious as to what would come next, and when our team fell behind our hearts were in our mouths. Watching the game between those two teams is not only a matter of great joy. For more than that it provides food for thought. Just see how the Chinese women won the game ──by their co ──operation (合作), by their excellent skill, their effort and strong will. A Chinese saying goes, “When two competent opponents (比赛的k^s5*u双方) meet, the strong ──minded one will win. “This is the spirit of the Chinese Women’s Volleyball Team. If every Chinese showed some of the spirit, never losing heart in times of difficulty and remaining clear ──minded in times of advantage (优势), then our nation would stand in the vanguard (前列) of the world family of nations, just as the Chinese Women’s Volleyball Team has done, is doing and will do.
44. While watching the game, we _____.
A. had feelings of different kind
B. enjoyed a friendly and wonderful game
C. clapped and cheered only for the Chinese Women’s Volleyball Team
D. were eager to know what would happen later on
45. The wonderful game _____.
A. brought us great joy
B. provided us with food for our thoughts
C. gave us not only great joy but also food for thoughts
D. give us a valuable amusement
46. The author believed that _____.
A. the Chinese Women’s Volleyball Team was the strongest
B. China was sure to become stronger and stronger if only we have that spirit of the Chinese Women’s Volleyball Team
C. The Chinese must remain clear-minded in time of advantage
D. The Chinese Women’s Volleyball Team never lost heart in times of difficulty
47. The best title of the passage might be _____.
A. Watching a Close Volleyball Game
B. The Spirit of the Chinese Women’s Volleyball Team
C. Learn from the Members of the Volleyball Team
D. The Strong
──Minded Are the Winners

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