No two leaves from the same tree are ________.A identicalB originalC analyticalD criti

A. The data is moving from 10BASE-TX to 100BASE-TX.

B. The WAN encapsulation type has changed.

C. The data format has changed from analog to digital.

D. The source and destination hosts are in the same subnet.

E. The source and destination MAC addresses have changed.

A.The data is moving from 10BASE-TX to 100BASE-TX.

B.The WAN encapsulation type has changed.

C.The data format has changed from analog to digital.

D.The source and destination hosts are in the same subnet.

E.The source and destination MAC addresses have changed.

that he won't return. After the vessel sails，the Chief Officer finds the seaman's work clothes in his locker. How should the Master handle this matter？

A.Log the seaman as a deserter

B.Log the seaman as a fail to join

C.Log the seaman for misconduct

D.Take no action

o drink their blood. Male mosquitoes do not drink blood. They drink fluids from plants. The female mosquito uses its thin sucking tube to break the skin, find blood and inject the victim with a substance that keeps blood flowing.The female mosquito drinks the blood and uses it to produce as many as 250 eggs. The insect leaves the eggs in any standing water.The eggs produce worm-like creatures called larvae (幼虫) in two days to a few months. However, some eggs can stay in water for years until conditions are right for development. The larvae feed on organisms in the water. After four to ten days, they change again, into creatures called pupas (蛹). The pupas rise to the surface of the water. Adult mosquitoes pull themselves out of the pupas and fly away.The World Health Organization (WHO) says mosquitoes carry organisms that cause disease and death for millions of people throughout the world. The most important disease spread by mosquitoes is malaria (疟疾). The WHO says 247 million people became infected with malaria in 2006. Malaria caused almost one million deaths, mostly among children in Africa. The disease is found in more than one hundred countries in Africa, Asia, the western Pacific Ocean, the Middle East and Central and South America.Malaria parasites (寄生虫) enter a person’s blood through a mosquito bite. These organisms travel to the liver. They grow and divide there. After a week or two, the parasites invade red blood cells and reproduce thousands of times. They cause the person’s body temperature to rise. They also may destroy major organs. People with malaria may suffer kidney failure or loss of red blood cells.Some medicines are generally effective in preventing and treating malaria. They are designed to prevent the parasites from developing in the body. People die from malaria because they are not treated for the disease or the treatment is delayed.

(1) According to the passage, we can infer that _________.

A、female mosquitoes don’t bite animals

B、female mosquitoes bite people for a substance that keeps blood flowing

C、malaria is found everywhere in the world

D、countries in Europe and North America have low malaria death rate

(2) What is the right order in which mosquitoes grow？

a. Adult mosquitoes pull themselves out of the pupas and fly away.

b. The larvae change into creatures called pupas.

c. The insect leaves the eggs in any standing water.

d. The eggs produce worm-like creatures called larvae

A、c, a, b, d

B、d, c, b, a

C、c, d, b, a

D、d, b, c, a

(3) According to the WHO, the organisms carried by mosquitoes __________.

A、are the food for larvae

B、have led to the death of millions of people in the world

C、invade red blood cells first and then destroy major organs

D、can enter a person’s brain through the mosquito’s bite

(4) According to the passage, malaria medicines are generally designed to _______

A、keep people’s body temperature at a normal level

B、prevent parasites from entering people’s skins

C、stop parasites from growing inside the body

D、stop parasites from invading red blood cells

(5) What is the passage mainly talking about？

A、The growing process of mosquitoes and the diseases spread by them.

B、The medicines used in preventing and treating malaria

C、The kinds of mosquitoes in the world today.

D、The larvae of mosquitoes feed on organisms in the water.

听力原文：W: Let's go into the penguin house.

M: Great! I read that they've added a couple of emperor penguins from Antarctica.

W: I was hoping to stay in the warmer section. You know, they have some penguins here from the Galapagos Islands-and that's practically on the equator.

M: But the emperor penguin's huge! It's a lot bigger than the Galapagos penguin—in fact, it's bigger than all the other penguins—almost four feet high.

W: Imagine a bird that size flying through the air...

M: Penguins don't actually fly.

W: I know that. They just sort of... waddle.

M: They swim, too. Even though they're feathered, their wings are more like flippers-they work like paddles in the water.

W: I thought they were land animals.

M: They lay their eggs on land. They make their nests in these enormous colonies called rookeries. See, the emperor penguin has this interesting nesting habit. The female bird leaves the ocean at the beginning of autumn. She lays an egg on the ice and then immediately returns to the water.

W: What happens to the egg？

M: The male rolls it onto his feet and then covers it with the lower part of his belly.

W: Then what？

M: For two whole months. During the worst part of the winter, he huddles together with other male penguins to keep the eggs warm.

W: So the female brings him food？

M: No. See, the penguin can fast for up to four months. The female comes back after the chick hatches. When she does, the male goes out to sea to get food for himself and the chick.

(23)

A．The zoo has built a rookery there.

B．He's writing a book about penguins.

C．He's interested in seeing a certain species.

D．It has recently been renovated.

refer to live in the country away from the dirt and noise of a large city. I have managed to convince myself that if it weren't for my job I would immediately head out for the open spaces and go back to nature in some sleepy village buried in the country. But how realistic is the dream？

2 Cities can be frightening places. The majority of the population live in massive tower blocks, noisy, dirty and impersonal. The sense of belonging to a community tends to disappear when you live fifteen floors up. All you can see from your window is sky, or other blocks of flats. Children become aggressive and nervous -- cooped up at home all day, with nowhere to play; their mothers feel isolated from the rest of the world. Strangely enough, whereas in the past the inhabitants of one street all knew each other, nowadays people on the same floor in tower blocks don't even say hello to each other.

3 Country life, on the other hand, differs from this kind of isolated existence in that a sense of community generally binds the inhabitants of small villages together. People have the advantage of knowing that there is always someone to turn to when they need help. But country life has disadvantages too. While it is true that you may be among friends in a village, it is also true that you are cut off from the exciting and important events that take place in cities. There's little possibility of going to a new show or the latest movie. Shopping becomes a major problem, and for anything slightly out of the ordinary you have to go on an expedition to the nearest large town. The city-dweller who leaves for the country is often

oppressed by a sense of unbearable stillness and quiet.

4 What, then, is the answer？ The country has the advantage of peace and quiet, but suffers from the disadvantage of being cut off; the city breeds a feeling of isolation, and constant noise batters the senses. But one of its main advantages is that you are at the centre of things, and that life doesn't come to an end at half-past nine at night. Some people have found (or rather bought) a compromise between the two: they have expressed theirpreference for the "quiet life" by leaving the suburbs and moving to villages within commuting distance of large cities. They generally have about as much sensitivity as the plastic flowers they leave behind -- they are polluted with strange ideas about change and improvement which they force on to the unwilling original inhabitants of the villages.

5 What then of my dreams of leaning on a cottage gate and murmuring "morning" to the locals as they pass by？ I'm keen on the idea, but you see there's my cat, Toby. I'm not at all sure that he would take to all that fresh air and exercise in the long grass. I mean, can you see him mixing with all those hearty males down the farm？ No, he would rather have the electric imitation-coal fire any evening.

We get the impression from the first paragraph that the author______.

A．used to live in the country.

B．used to work in the city.

C．works in the city.

D．lives in the country.

e answer is no.Actually, it is the processing of tea that finally decides the tea types.For example, black tea requires 100% oxidation and green tea requires almost no oxidation.So tea processing is quite an important factor in the production of tea.Anyway, the normal processing of tea includes the following four basic steps:

1.New leaves are spread in order to reduce water content until they are pliable enough to be rolled.This process is called withering.

2.The second step is rolling the withered leaves.Oils and extra moisture are released.This process can be done with machinery or by hand.

3.The third step is called oxidation or fermentation.In this process the leaves turn from green to bright copper in colour.This step decides what type of tea we want.

4.The last step is drying the leaves to stop the oxidation process.The leaves should be dried thoroughly without burning.

Decide each statement is T (true) or F (false) based on Passage B.

6.The processing of tea decides the tea types.

7.Green tea requires a little oxidation.

8.Withering makes the tea leaves release oils and water.

9.Rolling the withered leaves can be done only with machinery.

10.Burning the leaves is the last step of tea processing.

A.three

B.two

C.five

D.four