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听力原文： An ancient paintbrush used by a prehistoric cave artist survives from 30, 000 ye

ars ago. But the bristles of the new nanobrushes are made of tiny carbon filaments—thirty billionths of a meter across and a few millionths long. The brush handles they're attached to are comparatively large—thicker than a human hair! The researchers have taken microscope pictures showing the brushes can be used to sweep up tiny pieces of nanodust on dirty surfaces.

The researchers also used their brushes to paint microstructures; and by coating the hairs with absorbent com- pounds, they could soak poisonous substances from water. If the tiny tools prove robust enough, they could one day find medical uses, or sweeping away unwanted dirt.

When was the paintbrush first utilized？

A．3,000 years ago.

B．5,000 years ago.

C．In the primitive society.

D．30,000 years ago.

提问人：网友psk091210 发布时间：2022-01-07

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第2题

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A．To get fun.

B．To fight.

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第3题

听力原文：Woman:The earliest records of this trade go back to the Ancient Greek period with

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B．trade in luxury household goods

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第4题

听力原文：M: People first sent signals by flags, some archaeologists observed.W: No. I thin

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Q: What are they discussing？

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A．How primitive people used flags.

B．What the ancient means of communication was.

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第5题

听力原文：Last summer I visited Mexico City to see the ancient art in museums there. I was

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A．To learn Spanish.

B．To tour the city.

C．To see the ancient art.

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第6题

听力原文：One of the important materials used in the construction of buildings and roads is

听力原文： One of the important materials used in the construction of buildings and roads is cement. It is a powder made mainly from limestone and clay. Even though the ancient Egyptians and Romans used a kind of cement, it was not until 1824 that an English bricklayer developed cement strong enough for modern roads and buildings.

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第7题

听力原文：People still celebrate ancient festivals in different parts of Europe with folk d

听力原文： People still celebrate ancient festivals in different parts of Europe with folk dances and processions, even though in many cases those who take part and put on special costumes are no longer sure what the dances represent. Almost all of them are associated with seasonal procedures that have been adapted to the Christian calendar. There are two main types found in a number of countries. The first, combat dances normally take place in winter or early spring and celebrate the battle between the old year and the new. In Austria, for example, at celebration time, people wear masks and dress up as ghosts and witches, and there are processions of men and women with drums and whips.

The other main group of dances takes place in early summer, especially at Whit sun or on May Day. In England, there are dances of men in some villages. Groups of trained dancers, dressed in white, dance with bolls on their legs and bodies. They leap in processions in double files, waving white handkerchiefs or green branches. In some places, there are men with animal masks or a Jack-in-the-Green, a man dressed in leaves who stands for the new vegetation of the summer.

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A．The birthday of some ancient people.

B．The birthday of Jesus Christ.

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第8题

听力原文：Ancient man, living in colder climates, is credited with making the first shoes,

听力原文： Ancient man, living in colder climates, is credited with making the first shoes, by adding material to the top of the crude "sandals" his neighbors in warmer climates had invented. He did so out of necessity, to give his feet additional protection from the cold.

Early man, in warmer climates, invented the sandal to protect his feet from sharp rocks, and did so by strapping a mat of woven grass, a strip of animal hide, or a slab of flat wood to his feet with "thongs" he cut out of animal hide. Some even pulled the thongs between the toes and tied them around the ankles to tighten the fit of these crude sandals.

Wealthy ancient Egyptians wore sandals as long as 5,000 years ago, eventually everyone began wearing them, and the Egyptians designed differently. Ancient Greeks invented the boot, by replacing the sandal's thongs with solid leather. Many of these crude shoes have endured and are still worn today. Common examples include the sandals the ancient Greeks and Romans wore, the moccasins American Indians wore, and the clogs people in Holland still wear.

In the Middle Ages, around the time the Crusades began, modem shoes appeared on the scene. The Crusaders, who went on long treks, needed durable, comfortable shoes that people then began making for this purpose.

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A．To give his feet additional protection from the cold.

B．To make the sandals wear-resisting.

C．To match his trousers.

D．To make the sandals look more beautiful.

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第9题

听力原文： Workers in Athens, Greece started on Saturday removing the six ancient Greek sta

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How many ancient Greek statues were removed indoors？

A．16

B．6

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第10题

听力原文：The theory once advanced in the nineteenth century—that the productivity of the l

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The Mediterranean region is cited as an example of ______.

A．the ability of nature to remedy human destruction

B．the ability of people to make use of natural resources

C．the manner in which people replenish the environment

D．the effects of human abuse of natural resources

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听力原文：In ancient times, many people believed tile earth was a flat disc. Well over 2,00

听力原文： In ancient times, many people believed tile earth was a flat disc. Well over 2,000 years ago, rite ancient Greek philosophers were able to put forward two good arguments proving that it was not. Direct observations of heavenly bodies was the basis of both these arguments. First, the Greeks knew that during eclipses of the moon, file earth was between the sun and the moon, and they saw that during these eclipses, the earth's shadow on the moon was always round, they realized that this could be true only if the earth was spherical. If tile earth were a flat disc, then its shadow during eclipses would not be a perfect circle, it would be stretched out into a long ellipse. Tile second argument was based on what the Greeks saw during their travels. They noticed that the North Star, or Polaris, appeared lower in the sky when they traveled south, in more northern regions, the North Star appeared to them to be much higher in file sky. By the way, it was also from this difference in the apparent position of the North Star that the Greeks first calculated the approximate distance around the circumference of the earth, a figure recorded in ancient documents says 400,000 stadia, that's the plural of the word stadium. Today, it's not known exactly what length one stadium represents, but let's say, it was about 200 meters, the length of many athletic stadiums. This would hake the Greek' s estimate about twice the figure accepted today, a very good estimate for those writing so long before even the first telescope was invented.

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A．How ancient philosophers measured the distance between heavenly bodies.

B．How ancient philosophers explained the cause of an eclipse of the Moon.

C．Why ancient philosophers thought the Earth was a sphere.

D．Why ancient philosophers thought the Earth moved around the Sun.

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