Thousands of years ago man used handy
rocks for his surgical operations. Later he used sharp bone or horn, metal
knives and, more recently, rubber and plastic. And that was where we stuck, in
surgical instrument terms, for many years. In the 1960s a new tool was
developed, one which was, first of all, to be of great practical use to the
armed forces and industry, but which was also, in time, to revolutionize the art
and science of surgery. The tool is the laser and it is, being
used by more and more surgeons all over the world, for a very large number of
different complaints. The word laser means: Light Amplification by Stimulated
Emission of Radiation. As we all know, light is hot; any source of light--from
the sun itself down to a humble match burning--will give warmth. But light is
usually spread out over a wide area. The l A. medical help became available to industrial workers B. the study of surgical techniques went through a complete revolution C. more and more surgeons began using surgical instruments D. man’s whole approach to surgery changed completely
[单项选择]
Passage Two
Thousands of years ago, in the middle of an ocean, miles from the nearest island, an undersea volcano(火山) broke out. The hot liquid rock piled higher and higher and spread wider and wider. In this way, an island rose up in the sea.
As time went on, hot sun and cool rains made the rock split and break to pieces. Sea waves dashed against the rock. In this way, soil and sand came into being.
Nothing lived on the naked soil. And then the wind and birds brought plant seeds, spiders and other little creatures there. Only plants could grow first. Only they, in sunlight, could produce food from the minerals of the soil, water and air. While many animals landed on the island, they could find no food. A spider spun its web in vain, because there were no insects for its web to catch, In sects couldn’ t stay until there were plants for them to eat. So plants had to be the pioneer life on this new island.
The order of coming into being on A. soil, plants and animals B. soil, little creatures and plants C. soil, human beings and animals
[单项选择]
Passage Two Thousands of years ago, in the middle of an ocean, miles from the nearest island, an undersea volcano(火山) broke out. The hot liquid rock piled higher and higher and spread wider and wider. In this way, an island rose up in the sea. As time went on, hot sun and cool rains made the rock split and break to pieces. Sea waves dashed against the rock. In this way, soil and sand came into being. Nothing lived on the naked soil. And then the wind and birds brought plant seeds, spiders and other little creatures there. Only plants could grow first. Only they, in sunlight, could produce food from the minerals of the soil, water and air. While many animals landed on the island, they could find no food. A spider spun its web in vain, because there were no insects for its web to catch, In sects couldn’ t stay until there were plants for them to eat. So plants had to be the pioneer life on this new island.
The order of coming into being on the island is () A. soil, plants and animals B. soil, little creatures and plants C. soil, human beings and animals
[单项选择] Passage Four
About one million years ago, the Ice
Age began. The Ice Age was a long period of time in which four great glaciers
pushed southward to cover almost all the upper half of North America, and then
melted away. Each glacier was a thick sheet of ice and snow that spread out from
a centre near what is now Hudson Bay in Canada. The winters were long, and the
cool summers were too short to melt much of the ice and snow. The ever-growing
sheet built up to a thickness of two miles at its centre. As all
glaciers do, these great glaciers slid. They pushed down giant trees in their
paths and scraped the earth bare of soil. Many animals moved farther south to
escape. Others stayed and were destroyed. When winters of little
snow came, the summer sun cut into the edges of the ice sheets. As the glaciers
melted, rocks, soil and other things A. the Ice Age was a long period of time B. great glaciers covered North America many years ago C. changes in climate helped to melt the glaciers D. how glaciers changed North America
[单项选择] Passage One
About four years ago, Kerry Sturgill
found herself at a career crossroads: Should she stay in an industry populated
by extroverts(外向型的人) or jump ship to a more reflective place where introverts
like her were in the majority Career counselors had told her to
get out of the highly extroverted public relations fields " so you can be happy
and do what you are. " Among the less fast-paced areas they pointed to: art,
scientific research, data analysis. Such a move is definitely
the right road for many introverts struggling to fit into an extroverted
workplace. So, just what is an introvert anyway It’s someone
who is energized by thought and reflection, while extroverts are energized by
socializing. Introverts naturally need to think before they speak.
Extroverts use the speaking process to figure out what it is they want t A. antisocial B. reserved C. aggressive D. queer
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