题目内容
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A．The land has an abundance of coal resources.
B．The United States has some farmland.
C．People from many countries brought with them wealth.
D．The workingman laid a firm foundation for the whole nation.
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A．The helicopter can fly forwards, backwards, up, down, and sideways.
B．The helicopter can hover in the air.
C．The helicopter can land and take off from a flat roof.
D．The helicopter has a single-bladed rotor on its top.
听力原文： In the past few years, millions of Americans have become suddenly enthusiastic about the bicycle as if it were a great new invention. Annual bicycle sales doubled between 1960 and 1970, and there are nearly 70 million bicycles in the United States today.
Of course, the bicycle has been around for more than 160 years and this isn't America's first bicycle passion. A wave of bicycle enthusiasm swept the land in the late 1800s and bicycle production was up to two million in 18917. Then with the coming of the automobile, bicycle declined, and for decades remained popular only with children and a few adults.
Now, a national concern with air pollution and physical fitness has brought the bicycle back to the forefront, particularly with adults. More than eight million bikes were sold in the United States last year, a third of which bought by adults. But the year before, only 15 percent of new bicycle sales were for adults.
(33)
A．Nearly 7 million.
B．Nearly 17 million.
C．Nearly 70 million.
D．Nearly 77 million.
No wooded landscape we see today has been forest for all time. Plants have minimum requirements of temperature and moisture and, in ages past, virtually every part of Earth's surface has at some time been either too dry or too cold for plants to survive. However, as soon as climatic conditions change in favour of plant life, a fascinating sequence of changes occurs, called a primary succession.
First to colonize the barren land are the lowly lichens, surviving on bare rock. Slowly, the acids preduced by these organisms crack the rock surface, plant debris accumulates, and mosses establish a shallow root-hold. Ferns may follow and, with short grasses and shrubs, gradually form. a covering of plant life. Roots probe even deeper into the developing soil and eventually large shrubs give way to the first trees. These grow rapidly, cutting off sunlight from the smaller plants, and soon establish complete domination-closing their ranks and forming a climax community which may endure for thousands of years.
Yet even this community is not everlasting. Fire may destroy it outright and settlers may cut it down to gain land for pasture or cultivation. If the land is then abandoned, a secondary succession will take over, developing nmch faster on the more hospitable soil. Shrubs and trees are among the early invaders, their seeds carried by the wind, by birds and lodged in the coats of mammals.
For as long as it stands and thrives, the forest is a vast machine, storing energy and many elements essential for life.
What does the forest strike mankind as permanent？
A．The trees are in community.
B．The forest is renewed each season.
C．Man's life is short in comparison.
D．It is an essential part our lives.
听力原文： In the past two years, millions of Americans have suddenly embraced the bicycle as if it were a startling new invention. Annual bike sales doubled between 1960 and 1970, and there are nearly 70 million bikes in the United States today. That's more than two for every three automobiles.
Of course, the bike has been around for more than 150 years, and this isn't America's first bicycle boom. A wave of bike enthusiasm swept the land in the late 1800s and bicycle production hit two million units in 1897. Then with the coming of the auto, bicycling declined, and for decades remained popular only with children and a few adult faddists.
Now, national preoccupation with air pollution and physical fitness has brought the bike back to the forefront—particularly with adults. More than eight million bikes were sold in the United States last year and a third of them went to adults. The year before, only 15 percent of new bike sales were for adults.
(30)
A．The use of bikes is a new invention in the U.S.
B．Annual bike sales doubled in the 60s in the U.S.
C．The producers made 70 million bikes every year.
D．The number of bikes is two times that of cars in the U.S.
A.The trees are in community.
B.The forest is renewed each season.
C.Man's life is short in comparison.
D.It is an essential part our lives.
A．The lack of a qualified sales force.
B．Lower price in suburban shopping malls.
C．Unpleasant highway commuting.
D．Limited land available.
A．The speculations of Thales.
B．The forces of electricity, magnetism, land gravity.
C．Aristotle's natural science.
D．Galileo's discoveries.
A.The woman should get on the plane.
B.The plane will land at 9:30.
C.The woman need not worry.
D.The announcer should try not to sound nervous.
听力原文： "But I just paid $1.69 for this bottle of wine last week. How come the price is now $2.25？ What's going on？"
There are at least three things going on that have caused the price of wine to rise. All have to do with the supply and demand factors of economics.
The first factor is that people are drinking more wine than ever before. This demand for more wine has increased overall wine sales in America at the rate of 15 percent a year.
The second factor is that the supply of wine has stayed relatively the same, which means that the same number of bottles is produced each year. Wine producers are trying to open up new land to grow more grapes. But in at least three wine-producing areas of the world France, Germany, and California new vineyards will not be available in the near future. Wines are produced in other countries, such as Italy, Spain and Australia, but none of these countries will be able to fill the demand for good wines.
The third factor is that costs of wine production are increasing. The men who make wine are asking for more money, and the machinery needed to press the grapes is becoming more expensive.
When the demand for something is greater than the supply, prices go up. When production costs, meaning the price of labor and machinery, rise, the producer adds this increase to the price of the wine.
(33)
A．The speaker is inquiring about the price.
B．The speaker is concerned about the price.
C．The speaker is bargaining with the dealer.
D．The speaker is complaining about the price.
What principles most influenced scientific thought for two thousand years？
A．The speculations of Thales.
B．The forces of electricity, magnetism, land gravity.
C．Aristotle's natural science.
D．Galileo's discoveries.
