7.In earlier times, cosmetics were     .

    A.never used in milk baths          B.never used on the eyes

    C.never used on the skin           D.sometimes harmful to the skin

C

Have you ever noticed, when looking at a map of the world, that the east coast of South America and the west coast of Africa look as though they might fit together? If you have, you are not alone. In 1965 the English scientist Sir Edward Bullard used a computer to Text the fit of the two continents and found that at an ocean depth of 2000 meters the match was very close indeed.

It seems too remarkable to be possible, but there is a lot of evidence to suggest that Africa was once joined to South America. For example, there is a belt of ancient rocks along the east of Brazil which corresponds with the rocks across the South Atlantic in West Africa.

There is further evidence that existing land masses were once linked. The remains of a 400-to-500-million-year-old mountain chain has been found running down the eastern part of Greenland, western Scandinavia, and through north-west Scotland and Ireland, into western Canada, eventually finding their way to north-west Africa.

Then there is the evidence from life itself. In various parts of the world today the same animals and plants can be found on land masses separated by, in some cases, thousands of miles of oceans. Did they evolve(进化)at the same time in two different places? It seems unlikely. Biologists believe that there must have been land bridges which have now sunk beneath the sea. Also fossils found in sedimentary rocks(fossils are the preserved remains of life forms)have allowed geologists to trace the same plants from South America, and Antarctica in rocks perhaps 300 million years old.

The ice that is now confined to the polar regions has always been so limited in extent. Indeed, during a period of the Earth’s history known as the permocarboniferous(二叠石灰纪)age about 250-350 million years ago there is evidence from the rocks that there were glaciers covering South America, parts of Africa, and India Australia. On the other hand, in the northern hemisphere(北半球)there were deserts. If the continents were distributed(分布)as they are today, it is hard to understand how this could be.

So there is considerable evidence to show whole continents moved apart, and naturally many people have tried to discover how and why whole land masses moved.

4.The passage mainly wants to        .

    A.introduce a new software         

B.explain the disadvantage of a new invention

    C.advertise a new kind of product    

D.describe the future market of a new product

B

Millions of women use cosmetics, often called ‘make-up’. The cosmetics industry is one of the biggest in the world. Most large stores sell cosmetics, and there are always shops at airports selling them cheaply.

The word ‘cosmetics’ refers to anything that people put on their faces to make them look better. Lipstick, face powder and cream, and eye make-up are the most popular. Although more women than men use cosmetics, there are cosmetics for men as well as women.

Some people even have cosmetic surgery to make their faces look different. They have the shape of their noses and eyes changed.

The most widely used cosmetic is probably lipstick, as many women who do not wear any other make-up will often put on a little lipstick.

Lipstick is made by mixing together different oils and colors. This mixture is then allowed to get hard and is cut into the shape of a small pencil. When a woman presses the lipstick to her lips, the end of it becomes soft, and some of it sticks to her lips, giving them extra color.

Cosmetics were probably first used in India, but it was the Egyptians, six thousand years ago, who made the most use of them. Rich Egyptian women painted their eyes green and black. They used a red color to paint pretty designs on their fingernails, the palms of their hands and the soles of their feet. Pictures of Cleopatra always show her wearing a lot of make-up.

The Romans also used cosmetics. They liked to make their skin very white and to paint their eyes. They also used a kind of lipstick.

In England at one time, very rich women had baths in milk to make their skin beautiful. They also used a lot of sweet-smelling powder to stop people smelling their bodies, which were often very dirty because they did not wash very often or change their clothes.

At one time, some cosmetics were not safe. They were bad for the skin, and some of the lipsticks and powders that people used were even poisonous. Nowadays, people in the cosmetics industry take great care to make sure that everything they use is completely safe.

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