What do you know about the sea? You may have seen it. Some of us have swum or bathed in it. It looks beautiful on a fine sunny day and it can be very rough when there is a strong wind. What other things do we know about it? Of course, the sea is very large. In the world there is more sea than land. The sea covers three quarters of the earth. The sea is also very deep in some places. It is not deep everywhere, some pa
rts of it are very great. At one spot, near Japan the sea is nearly 11 kilometers deep! Just think of it, the highest mountain in the world is only about 9 kilometers high! If you have swum in the sea, you know that the water is salty. Rivers carry salt from the land into the sea. Some parts of the sea are more salty than other parts. Do you know the Dead Sea in Arabia? It is very salty. Swimmers cannot sink in it! Fish cannot live in the Dead Sea. It is a strange sea. In most parts of the sea, there are a lot of fishes and plants. Some live near the top of the sea. Others live deep down. No sunlight can reach the depth of the sea. So it is completely dark. Strange fishes live there. Some are blind. Some have their own lights. Some have great jaws. With their great jaws, they swallow fish larger than themselves. The sea can be very cold. Deep sea divers know this well. At the top of the water may be warm. Then as the divers go down, the sea becomes colder and colder.
Many scientists are now making a study of animal and plant life in the sea. They hope to find new resources for mankind.. Which of the following statements is NOT true?
A．Land covers one fourth of the are a of the earth. |
| B．The depths of the sea are different in different places. |
| C．The depth of a sea at one spot near Japan is nearly the height of the highest mountain. |
| D．The salt in the sea mainly comes from the land. |
.. The Dead Sea is lifeless because ___.
| A．the water in it is too cold | B．the water in it is too salty for anything to grow |
| C．the water in it never flows | D．no sunlight can reach the bottom of the lake |
. We can see the underlined word “rough” in this passage means ___.
| A．ugly | B．noisy | C．cold | D．not calm |
.. Which of the following statements is true?
| A．Some of the fish living in the depth of the sea can not see by themselves. | |
| B．Some fish give out light for themselves. | |
| C．Some fish live on other fish. | D．All of the above |
.. What does the writer intend to tell us in the last paragraph?
| A．The necessity of the study of the sea. | B．The purpose of man’s further study of the sea. |
| C．Man’s limited knowledge of the sea. | D．The importance of new resources for man. |
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You may find the above advertisements _____.
| A．in a store window | B．in a school magazine |
| C．in a newspaper | D．on a company notice-board |
The position of a(n) _____ is a part-time job.
| A．florist | B．artist |
| C．preschool teacher | D．dental nurse |
Which of the following is the most important for the childcare job?
| A．Cooking skills. |
| B．The ability to work well with other people. |
| C．Childcare experience. |
| D．The ability to start work in two weeks. |
An office cleaner will be required to work about _____ hours a week.
| A．5 | B．10 | C．15 | D．45 |
The next great land area that man hopes to control is the moon. In size it is nearly equal to the area of North and South America. However, it presents a hostile (不友好的) environment. Temperatures range +120 to -150 degrees Centigrade. There is no air, and no water.
Today there is considerable scientific speculation (思索) about living on the moon. When man will begin life on the moon surface is still not determined. But experts believe that settlement will take place in three steps. First, there will be increasing periods of exploration with temporary shelters. These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the settlers themselves from the earth. Finally, settlements that are self-supporting will be founded.
The main job of the early settlers will be to stay alive. They will have to plant crops under huge domes (圆顶屋) to produce food and oxygen and find water sources. After this is done, the settlers will have time to explore the possibilities of commercial (商业的) development and to make discoveries important to science. The characteristics of the moon that make it bad for human staying alive may make it ideal for certain kinds of manufacturing . Operations requiring a vacuum (真空) or extreme cold are examples. Therefore, industrial diamonds might be produced on the moon.The area of the moon is _________.
| A．about the same as that of North and South America |
| B．larger than that of North and South America |
| C．hardly equal to that of North and South America |
| D．far smaller than that of North and South America |
To stay alive on the moon, first of all the early settlers must be able to ______.
| A．get enough food, oxygen and water |
| B．develop commerce |
| C．make discoveries important |
| D．explore the possibilities of industrial development |
Though the environment on the moon is bad for human staying alive, it is very good for ________.
| A．all kinds of manufactured goods |
| B．commercial development |
| C．making such things as industrial diamonds |
| D．medical operations |
Most people know that Marie Curie was the first woman to win the Nobel Prize, and the first person to win it twice. However, few people know that she was also the mother of a Nobel Prize winner.
Born in September, 1987, Irene Curie was the first of the Curies’ two daughters. Along with nine other children whose parents were also famous scholars, Irene studied in their own school, and her mother was one of the teachers. She finished her high school education at the College of Sevigne in Paris.
Irene entered the University of Paris in 1914 to prepare for a degree in mathematics and physics. When World War I began, Irene went to help her mother, who was using X-ray facilities to help save the lives of wounded soldiers. Irene continued the work by developing X-ray facilities in military hospitals in France and Belgium. Her services were recognized in the form of a Military’s Medal by the French government.
In 1918, Irene became her mother’s assistant at the Curie Institute. In December 1924, Frederic Joliot joined the Institute, and Irene taught him the techniques required for his work. They soon fell in love and were married in 1926. Their daughter Helene was born in 1927 and their son Pierre five years later.
Like her mother, Irene combined family and career. Like her mother, Irene was awarded a Nobel Prize, along with her husband, in 1935. Unfortunately, also like her mother, she developed leukemia(白血病) because of her work with radioactivity（放射性）. Irene Joliot-Curie died from leukemia on March 17, 1956.Why was Irene Curie awarded a Military Medal?
| A．Because she received a degree in mathematics. |
| B．Because she contributed to saving the wounded. |
| C．Because she won the Nobel Prize with Frederic. |
| D．Because she worked as a helper to her mother. |
Where did Irene Curie meet her husband Frederic Joliot?
| A．At the Curie Institute. |
| B．At the University of Paris. |
| C．At a military hospital. |
| D．At the College of Sevigne. |
When was the second child of Irene Curie and Frederic Joliot born?
| A． In 1932. | B． In 1927. |
| C． In 1897. | D． In 1926. |
In which of the following aspects was Irene Curie different from her mother?
| A．Irene worked with radioactivity. |
| B．Irene won the Nobel Prize twice |
| C．Irene combined family and career. |
| D．Irene won the Nobel Prize once |
Taxes, Taxes and More Taxes
Americans often say that there are only two things a person can be sure of in life; death and taxes. Americans do not have a corner on the “death” market, but many people feel that the United States leads the world with the worst taxes.
Taxes consist of the money which people pay to support their government. There are generally three levels of government in the United States: federal (联邦), state, and city; therefore, there are three types of taxes.
Salaried people who earn more than a few thousand dollars must pay a certain percentage of their salaries to the federal government. The percentage varies form person to person. It depends on their salaries. The federal government has a graduated income tax, that is, the percentage of the tax (14 to 70 percent) increases as a person’s income increases. With the high cost of taxes people are not very happy on April 15, when the federal taxes are due.
The second tax is for the state government: New York, California, North Dakota, or any of the other forty-seven states. Some states have an income tax similar to that of the federal government. Of course, the percentage for the state tax is lower. Other states have a sales tax, which is a percentage charged to any item(项目) which you buy in that state. For example, a person might want to buy a packet of cigarettes for twenty-five cents. If there is a sales tax of eight percent in that state, then the cost of the cigarettes is twenty-seven cents. This figure includes the sales tax. Some states use income tax in addition to sales tax to raise their revenues (收入). The state tax laws are various and confusing.
The third tax is for the city. This tax comes in two forms: property tax (people who own a home have to pay taxes on it) and excise (国产) tax, which is charged on cars in a city. The cities use these funds for education, police and fire departments, public works and municipal (市政内) buildings.
Since Americans pay such high taxes, they often feel that they are working one day each week just to pay their taxes. People always complain about taxes. They often protest that the government uses their tax dollars in the wrong way. They say that it spends too much on useless and impractical programs. Although Americans have different views on many issues, they tend to agree on one subject: taxes are too high.How do you understand the sentence “Americans do not have a corner on the ‘death’ market”?
| A．It means that Americans, just like all other people, must die. |
| B．It means that Americans do not have a secret place to keep from death in their life. |
| C．It means that Americans are not good at doing business in the death market. |
| D．It means that there is no such place as a death market in the U. S. |
Why should the American people usually pay three types of taxes?
| A．There are three levels of government--federal, state and city-to support the United States. |
| B．There are three kinds of taxes to pay--graduated income tax, sales tax and property tax.. |
| C．They earn different salaries: high, middle, and low. |
| D．Tax laws in different states are different. |
What does the title “Taxes, Taxes, and More Taxes” imply?
| A．Americans are not satisfied with the three types of taxes. |
| B．The three levels of government do not use the taxes in a right way. |
| C．Americans complain that taxes are too high. |
| D．Americans’ taxes are diverse and confusing. |
Scientists have found what look like caves on Mars, and say they could be protecting life from the planet’s terrible environment.
The first caves discovered beyond the Earth appear as seven mysterious black dots on the pictures sent back by NASA’s Mars Odyssey orbiter. Each as large as a football field, they may be openings into natural caves below the Martian surface.
“If there is life on Mars, there is a good chance you’d find it in caves,” said Jut Wynne, one of the researchers who noticed the features while working on a US Geological Survey Mars Cave Detection Program.
Jonathan Clarke, a geologist with the Mars Society of Australia, yesterday described the discovery as exciting.
One photo taken at night by an infrared imager(红外线成像器) showed one hole to be unusually warm, suggesting hot air trapped during the day is flowing out.
“I said: ‘Wow, that’s a cave’.” Dr. Clarke said excitedly. “People have been looking for these for a long time; now we have found them.”
He agreed such caves would be perfect places to hunt for life escaping from the bitterly cold, radiation-soaked(充满辐射的), dry surface.
“Tiny drops of water could collect inside,” he said. “If there are gases coming out, they could provide energy for a whole range of bacteria. A cave is also a protection from radiation; the surface of Mars is exposed to high levels of space radiation.”
The caves probably formed when tube-shaped lave flows(管状岩浆流) spread across the planet long ago. The outside of the tubes cooled, forming solid walls, while something hotter inside allowed the remaining have to flow out, forming caves.
What does the passage mainly talk about?
| A．How the caves were formed on Mars. |
| B．How scientists found these caves on Mars. |
| C．Caves on Mars may be full of hot air or a sign of life. |
| D．Scientists have completely recognized the surface of Mars. |
What can the “cave” be used for according to the scientists?
A. They can protect life from the planet’s terrible environment.
B. They can provide energy for people’s life.
C. They can be used to prevent space radiation
D. Both A and C.We can learn from the passage that .
| A．water has already been found on Mars |
| B．the scientists found all the caves at night |
| C．it is certain that there is life in these caves |
| D．the surface of Mars is bitterly cold, radiation-soaked and dry |
According to the passage, Dr. Clarke was so excited because .
| A．such caves could provide energy for life |
| B．they had finally found the caves on Mars |
| C．such caves would be perfect places to hunt for life |
| D．scientists had long been looking for these caves |
Necessary conditions for life on Mars mentioned in the passage may include .
| A．lave and energy |
| B．water and radiation from space |
| C．gases and lave |
| D．water and protection from radiation |
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