定额市鞍钢阳光实验学校2014高考英语阅读理解巩固练习（42）及答案
The hole in the Earth’s ozone layer (臭氧层) has until now protected Antarctica from the worst effects of global warming. But scientists have warned that as the hole clos up in the next few decades, temperatures on the continent could ri by around 3 ℃ on average, with melting ice contributing to a global a level increa of up to 1.4 metres.
adjustIn the past decades the western Antarctic has en rapid ice loss as the world has warmed, but the other parts of the continent have, paradoxically, been cooling, resulting in a 10% increa in ice in the as around the region. This is becau the hole in the ozone layer has incread cold winds in Antarctica, making much of the continent surface colder than usual.kda是什么意思
But now that the gass that cau the ozone hole have been banned, scientists expect the hole to repair itlf within the next 50 to 60 years. By then the cooling effect will have faded out and the Antarctic will face the full impact of global warming. This means an increa in average air temperatures of around 3 ℃what goes around and a reduction in a ice by around a third.
The biggest threat to the continent comes from warming as. Robert Johnson, a scientist who monitors Antarctica ice sheets, said, “The ice sheets in Antarctica are hundreds of metres thick. But once warm ocean waters start flowing underneath, the ice will begin thinning and could break up very quickly.” Thinning ice sheets cau ice to break away from the continent and to melt even faster. Escaping ice from western Antarctica has already resulted in a 10% ri in global a level in recent decades.
Johnson believes that international action to reduce global warming is required immediately or it may be too late. “Everything is connected — Antarctica may be a long way away but it is an important part of the Earth’s system，” said Johnson. “It contains 90% of the world’s ice, 70% of the world’s fresh water and that is enough, if it melts completely, to rai a levels by 63 metres.”
harddisk是什么意思Even in a wor-ca situation scientists don’t expect the ice to entirely disappear, but predict that, becau of the melting ice sheets, average a level ri will be around 1.4 metres higher by the end of the century.
1. The underlined word “paradoxically” (in Paragraph 2) most probably means“________.”
A. rapidly B. approximately
C. contradictorily D. apparently
【最佳选项】 C
2. What is the effect of the hole in the ozone layer on Antarctica?
A. It is causing the ice to melt faster.
B. It is making much of the continent colder.
C. It is making the effects of global warming in the region wor.心境的意思
D. It is reducing the amount of water in Antarctica.
【最佳选项】 B
3. What do scientists think is the biggest danger facing Antarctica?
A. Rising a levels.
B. Warming a water temperature.
C. Water pollution.
D. Growing ice sheets.
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【最佳选项】 B
4. Which of the following is true according to the passage?
A. Antarctica is currently experiencing the full effects of global warming.
B. The average temperature has incread by 3 ℃ in recent decades.
C. Antarctica contains most of the world’s fresh water.
D. Ten percent of Antarctica’s ice has already been lost.
【最佳选项】 C
5. The best title for the passage is________.
A. Our planet in danger
B. Antarctica melting away
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C. Action plan to save Antarctica
D. Let’s save the ozone layer
【最佳选项】 B
We bet that on cold wintry days, many of you love to stay in your warm home and, every now and then，come out into the kitchen for a snack. Unfortunately, plenty of creepy-crawly critters (爬行生物) like to do the same thing!
Winter is the time when bugs (虫子) invade your hou without an invitation. The ason
can be tough for such creatures. In winter the air is cold, the ground is hard and many trees have no leaves. So bugs do what they have to do to survive.
Monarch butterflies head south to warmer climates. Ants crowd in deep underground colonies and eat food they have been storing all year. Many incts go into a deep sleep called diapaus. There’ re different kinds of diapaus, but all are similar to hibernation, a time when bigger animals become inactive in the cold. Incts go into an inactive period, too, but it often isn’ t when the temperature drops.
xiangfanThey rely on more dependable signals in the environment. For example, many incts can tell how much sunlight there’ s each day. They u that to tell themlves when to shut down. Bugs are cold-blooded, meaning that their inside temperature is the same as the outside. They can’ t move much when it gets below 40 degrees Fahrenheit. So they arch for any warm place.
They’ re looking for protection. The guys have been doing this for 300 million years, so they don’ t really know they’ re coming into your hou. The home is a recent event in ter
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国内的英语ms of their evolutionary behavior. They enter through tiny cracks or come in unnoticed on your clothes or shoes. Remember that they may be invading your homes for warmth and food, but they don’t care about humans.
