What are the famous works of Sun Simiao？

A. Temperature falls below normal，pulse is rapid and feeble，skin is cold and clammy

B. Temperature is high，pulse is strong and rapid，skin is hot and dry

C. Temperature is high，pulse is slow and feeble，skin is clammy

D. Temperature falls below normal，pulse is rapid，skin is clammy

B

There are three branches of medicine. One is called " doctor medicine" or " scientific medicine". Scientific doctors try to observe sicknesses, look for logical patterns, and then find out how the human body works. From there they figure out what treatments may work. This kind of medi- cine is believed to date from the 4th century BC. Although nowadays it is successful, in the ancient world this approach probably did not cure many patients.

The second kind of medicine is called "natural cures"or " folk medicine" , in which less educated people try to cure sicknesses with various herbs(草药) . These folk healers also use observation and logic, but they are not aware of it. They try things until they find something that seems to work , and then they keep doing that. Folk medicine flourished long before the development of scientific medicine and was more successful in ancient times than doctor medicine.

The third kind is called "health spas" or " faith healing". Sometimes this is as simple as touching the holy man and being immediately healed. Other times, a magician may make you a magic charm, or say a spell, to cure you. Some religious groups organize special healing shrines (神坛) for the sick. In these places people rest, get plenty of sleep, eat healthy food; drink water instead of wine, and exercise in various ways. They also talk to the priests and pray to the gods. If you are feeling depressed or you have been working too hard, going to these places may be just the right thing to make you feel better.

61. Which of the following about doctor medicine is TRUE according to the passage?

[ A] It has a longer history than folk medicine.

[ B ] It has been practiced for around I ,600 years.

[ C] It bases its treatments on observation and logic.

[D] It was very successful in curing sicknesses in ancient times.

There are three branches of medicine, One is called "doctor medicine" or "scientific medicine". Scientific doctors try to observe sicknesses, look for logical patterns, and then find out how the human body works. From there they figure out what treatments may work. This kind of medicine is believed to date from the 4th century BC. Although nowadays it is successful, in the ancient world this approach probably did not cure many patients.

The second kind of medicine is called "natural cures" or "folk medicine", in which less educated people try to cure sicknesses with various herbs(草). These folk healers also use observation and logic, but they are not aware of it. They try things until they find something that seems to work, and then they keep doing that. Folk medicine flourished long before the development of scientific medicine and was more successful in ancient times than doctor medicine.

The third kind is called "health spas" or "faith healing". Sometimes this is as simple as touching the holy man and being immediately healed. Other times, a magician may make you a magic charm, or say a spell, to cure you. Some religious groups organize special healing shrines (神坛) for the sick. In these places people rest, get plenty of sleep, eat healthy food, drink water instead of wine, and exercise in various ways. They also talk to the priests and pray to the gods. If you are feeling depressed or you have been working too hard, going to these places may be just the right thing to make you feel better.

Which of the following about doctor medicine is TRUE according to the passage?

A．It has a longer history than folk medicine.

B．It has been practiced for around 1,600 years.

C．It bases its treatments on--observation and logic.

D．It was very successful in curing sicknesses in ancient times.

There are three branches of medicine. One is called "doctor medicine" or "scientific medicine". Scientific doctors try to observe sicknesses, look for logical patterns, and then find out how the human body works. From there they figure out what treatments may work. This kind of medicine is believed to date from the 4th century B@C@Although nowadays it is successful, in the ancient world this approach probably did not cure many patients.

The second kind of medicine is called "natural cures" or "folk medicine", in which less educated people try to cure sicknesses with various herbs(草药). These folk healers also use observation and logic, but they are not aware of it. They try things until they find something that seems to work, and then they keep doing that. Folk medicine flourished long before the development of scientific medicine and was more successful in ancient times than doctor medicine.

The third kind is called "health spas" or "faith healing" Sometimes this is as simple as touching the holy man and being immediately healed. Other times, a magician may make you a magic charm, or say a spell, to cure you. Some religious groups organize special healing shrines (神坛) for the sick. In these places people rest, get plenty of sleep, eat healthy food, drink water instead of wine, and exercise in various ways. They also talk to the priests and pray to the gods. If you are feeling depressed or you have been working too hard, going to these places may be just the right thing to make you feel better.

Which of the following about doctor medicine is TRUE according to the passage?

A．It has a longer history than folk medicine.

B．It has been practiced for around 1,600 years.

C．It bases its treatments on observation and logic.

D．It was very successful in curing sicknesses in ancient times.

What are two key features of rain-shadow deserts mentioned in the discussion? Click on 2 answers.

A．They occur mostly in subtropical regions.

B．They lie next to mountain ranges.

C．They receive only a small amount of sun.

D．Their exposure to moist air currents is blocked.

Aliens

Are there other forms of life in the universe'? The scientific search for extraterrestrial (ET) life forms has been bolstered by two recent discoveries. First, the discovery of life forms in exotic environments on Earth indicates that life is very hearty and can adapt to the strangest and most hostile environments. Second, astronomers found planets orbiting stars besides our sun—over 50 extrasolar planets have been discovered as of 2001. Are there alien life forms on any of these planets?

If alien life does exist, what might it be like? Would it be simple forms of life such as bacteria, viruses or algae, or more advanced, multi-cellular creatures, perhaps even intelligent beings? Would aliens be animals, plants or have characteristics of both? Would they have arms and legs and walk upright as we do? Would they depend upon vision as their primary sense or use another way to gather information about their surroundings? Would they "breathe" oxygen or some other gas?

Greetings, Carbon-based Bipeds(两足动物)!

Most of us picture alien life the way it's portrayed in movies, where aliens are commonly depicted as human-like forms because they use actors either to play the roles directly in make up or to be models for computer-generated animation. Also, audiences relate to human-like aliens better than to more exotic, monster like. However, the human body plan bilateral symmetry with one

head, two legs and two arms—stems from when early animals such as lizard, crocodile, or dinosaur colonized the Earth's land masses, and it seems unlikely that such a shape would evolve on an alien world. So, let's forget Hollywood for the moment and look closely at the real science of astrobiology.

Astrobiology is the scientific study of life in the universe. Astrobiologists seek to understand (among other things) how life arose and evolved on Earth, what governs the way life is organized and what makes a planet habitable.

Astrobiology combines the disciplines of biology, chemistry, physics, geology and astronomy. Often, astrobiologists must use the information learned about life on Earth as a guide for studying life elsewhere. Let's examine some of the unusual things that we have learned from life on Earth:

Life in the Extreme

Up until about 30 years ago, it was believed that all life on Earth was dependent upon energy from the sun. Furthermore, it was thought that you would probably not find life where temperatures were extremely hot, like in geysers or hot springs, or extremely cold,' like in the Antarctic desert.

These ideas changed when oceanographers explored hydrothermal vents, openings in the ocean floor where extremely hot, mineral-rich water erupts from the crust. Hydrothermal vents are located several miles below the surface, on the ocean floor, where the surrounding water is at or near freezing, it is absolutely dark and the pressure is high. In organized communities around the bases of these vents, called black smokers, scientists found clams, crabs and exotic, giant tubeworms measuring 6 feet (2 meters) long. The water coming out of these vents is 230 to 662 degrees Fahrenheit (110 to 350 degrees Celsius).

How can these animals survive so far from the sunlight, under these extreme conditions? In the water, scientists found species of bacteria that split hydrogen sulfide(硫化物)from the water to get energy to make organic compounds. The tubeworms have bacteria in their tissues that help them derive energy from the water. The clams feed on the bacteria, and the crabs feed on the tubeworms.

The discovery of hydrothermal-vent communities showed that it is possible for life to evolve in places without light from the sun, and in other worlds without sufficient light from the parent star. In view of the discovery of hydrothermal vents, it may be possible that life exists on Europa, an icy moon of Ju

A．Y

B．N

C．NG