In the long discussion of water on the Moon, a new study contradicts(与……相矛盾)) some recent reports that say the Moon had water at the time of its formation. A group of researchers reported in the journal Science that when the Moon was created, some 4.5 billion years ago, there was not much hydrogen(氢气) on it, and therefore no water.
The researchers surveyed and evaluated this by analyzing chlorine isotopes（氯同位素） found in lunar rock samples from Apollo missions. The range of chlorine isotopes in lunar samples was 25 times that found in samples from Earth.
If the Moon had significant levels of hydrogen, as Earth did, this range would have been far less, said Zachary D Sharp, a scientist in the Department of Earth and Planetary Sciences at the University of new Mexico and the study’s lead authour.
The chlorine would have stuck together with hydrogen, forming compounds like hydrogen chloride, and escaped from the Moon’s surface, he said. The abundance of chlorine indicates a lack of hydrogen and water.
“ The amount of water on the Moon was too low for life to possibly have existed there,” he said.
Most scientists believe the Moon was formed when a large object stuck 
Earth, breaking off a chunk(a vast piece) that has since orbited Earth.
On Earth, goes one theory, water was released as steam form molten basalts(玄武岩) over time, eventually forming bodies of water.
“An understading of whether the Moon was dry or wet will help us understand how water appeared on Earth,” Dr Sharp said. A new study indicates that _____ on the moorn.
| A．there is plenty of water | B．water is unlikely to exist |
| C．water existed in the past | D．there is a little water now |
The author would like to tell us ______ through the sixth paragraph.
| A．why there is no water on the Moon | B．how the Moon was formed |
| C．when the Earth struck the Moon | D．where the Moon orbited |
Which is NOT true according to the passage?
A. Zachary D. Sharp, a scientist of New Mexico was in charge of the new study.
B. Chlorine isotopes in lunar samples are 25 time larger than those on the Earth.
C. The more aboundant chloride, the shorter hydrogen and water.
D. The new study is benificial to understand how water appeared on Earth. What can we learn from the passage?
| A．There is enough water on the Earth. |
| B．Hydrogen chloride easily escaped from the Moon’s surface. |
| C．The Earth had significant levels of hydrogen. |
| D．Water on the Earth is directly from molten basalts. |
I was in a strange city and I didn't know the city at all, and what is more, I could not speak a word of the language. After having spent my first day in the town-centre, I decided to lose my way on my second day, since I believed that this was the simplest way of getting to know the strange city, I got on the first bus that passed, rode on it for several stops, then got off it and walked on. The first two hours passed pleasantly enough. Then I decided to turn back to my hotel for lunch. After walking about for some time, I decided I had better ask the way. The trouble was that the only word I knew of the language was the name of the street in which I lived and even then I pronounced it badly. I stopped to ask a friendly-looking newspaper-seller. He smiled and handed me a paper. I shook my head and repeated the name of the street and he put the paper into my hands. I had to give him some money and went on my way. The next person I asked was a policeman. The policeman listened to me carefully, smiled and gently took me by the arm. There was a strange look in his eyes as he pointed left and right and left again. I thanked him politely and began walking in the direction he pointed. About an hour passed and I noticed that the houses were getting fewer and fewer and green fields were appearing on either side of me. I had come all the way into the countryside. The only thing left for me to do was to find the nearest railway station.The writer believed that if you wanted to get to know a strange city, ________.
| A．you should go everywhere on foot |
| B．you should have a map |
| C．you should ask people the way |
| D．you should get lost |
The newspaper-seller ________.
| A．could understand what he said |
| B．didn't know what he said |
| C．laughed at him |
| D．didn't want to take the money |
The writer's real trouble was that ________.
| A．he couldn't speak the language |
| B．he followed the policeman's direction |
| C．he took the wrong bus |
| D．he left the town-centre |
The policeman ________.
| A．didn't help him |
| B．pointed at him |
| C．didn't understand what he really meant |
| D．didn't know the way |
Krakatau volcano (克拉克托火山) is in a small island in Indonesia. It had been peaceful for about 200 years before it erupted(爆发) in 1883.
The first signs of the activity of the volcano appeared in May 1883, when fire and smoke could be seen at the top of the mountain. Great noise could be heard even in Jakarta a hundred miles away. Later the activity grew much greater. The peak(山顶) was covered with smoke and fire; the smoke at one time was seventeen miles high in the air. The lava—soft and hot rock—shot up into the air and rolled down the sides of the mountain.
The mouth of the volcano was not at the peak of the mountain but on its side, close to the sea. As it grew bigger and bigger with the eruption, the sea water got into it. When the sea water reached the lava inside the volcano, it made the upper part of the lava colder and harder. And this sealed off (封住) the rest of the lava below. As the inside of the lava could not break through the seal, the pressure (压力) built up until the mountain blew up.
The eruption of the volcano was followed by several earthquakes which brought about bad result. About 36000 people were killed and many towns and villages near the sea were completely destroyed by the great waves which the earthquake caused.Give the correct order of the course of volcano eruption.
①The peak was covered with smoke and fire.
②Fire and smoke could be seen at the top of the mountain.
③Great noise could be heard a hundred miles away.
④The lava shot into the air and rolled down the sides of the mountain.
| A．①②③④ | B．①③②④ |
| C．②③①④ | D．④①③② |
What makes volcanoes erupt?
| A．The sea water which goes into the volcano |
| B．The lava. |
| C．The pressure which is bigger and bigger. |
| D．All the above. |
Where is the mouth of a volcano?
| A．At the peak of the mountain. |
| B．On the side of the mountain near the sea. |
| C．At the foot of the mountain. |
| D．In side the mountain. |
Butterflies are some of the most fascinating and beautiful insects in the world. Adult butterflies will live about 2 to 4 weeks. They use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry enemies.
Butterflies have large compound eyes(复眼), which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a sea of flowers than individual plants. Butterflies do not “see” colors such as red, green, and yellow, but they can sense sunlight, which indicates the direction the sun is shining, as well as ultraviolet light（紫外线）, which is present on many flowers and guides butterflies to honey sources.
Butterflies have a very well-developed sense of smell, but it is not in their nose, since they don't have one. Sense receptors are located in their antennae（触角）, feet, and many other parts of the body. They can help butterflies find their favorite flower honey food, and mates.
Butterflies' feet have sense organs that can taste the sugar in flower honey, letting the butterflies know if something is good to eat or not. Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs. Adult butterflies feed their babies using a long tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Butterflies don't have ears. Instead they “hear” sounds through their wings by sensing changes in sound vibrations（振动）.
Butterflies may possess senses we don't even know about yet, because their body structure is very different from ours, and therefore difficult to understand, when observed through our own human senses.What can we learn from the 2nd paragraph?
| A．Butterflies have good eyesight. |
| B．Butterflies can see in all directions and don't need to turn heads. |
| C．Butterflies are sensitive to bright colors including red and yellow. |
| D．Butterflies cannot sense the ultraviolet light. |
How do butterflies hear sounds?
| A．Using their feet to sense the vibration of things |
| B．Using their ears to listen directly |
| C．Using their wings to sense the sound vibrations |
| D．Using their antennae to judge the sound |
Why do female adult butterflies carefully choose the host plants?
| A．To find highqualified honey. |
| B．To have a good place for living. |
| C．To make it easier for them to hide from the enemies. |
| D．To find a proper place for their eggs. |
What does the last paragraph imply?
| A．There’s a long way to understand butterflies well |
| B．Butterflies give great help to human beings |
| C．Butterflies are the most beautiful insects in the world |
| D．Butterflies possess more senses than humans |
The text mainly focuses on ________.
| A．butterflies' living habits | B．butterflies' beauty |
| C．butterflies' daily activities | D．butterflies' senses |
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E-mail: Harcourt@learning.com.This advertisement aims at calling on people to ________.
| A．attend full-time universities |
| B．work part time to further their education |
| C．improve their education at home to get better jobs |
| D．earn their degrees in different ways that suit them |
Which of the following is NOT mentioned in this advertisement?
| A．The way how you will get your degree. |
| B．The exact amount of tuition you should pay. |
| C．The hot fields you will be preparing yourself for. |
| D．The length of time it will take you to get a degree. |
Which of the following majors doesn’t the Harcourt Learning Direct offer?
| A．photography | B．physiology |
| C．Accounting | D．bookkeeping |
People can get a Specialized Associate Degree by________.
| A．doing fulltime learning at school |
| B．working in some big famous companies |
| C．studying in their spare time |
| D．studying abroad for two years |
How can you get in touch with the Harcourt Learning Direct?
| A．By sending a letter not later than today. |
| B．By visiting the office on weekdays. |
| C．By making a call on weekdays only. |
| D．By sending an e-mail. |
When 15-year-old Louisa Ball takes a nap, she sleeps for days on end, and no amount of shaking can fully wake her up. The British girl has a rare condition called Sleeping Beauty Sickness. Doctors don’t know what causes it or how to cure it --only know that it strikes teenagers and goes away by itself after eight to 12 years.
Louisa’s mum, Lottie, told NBC News that the girl had flulike symptoms just over a year ago. Shortly afterward, she had her first period of long sleeping.
She was eventually diagnosed with Kleine-Levin Syndrome, whose victims worldwide may number no more than 1,000. The victims live normally for weeks or months at a time, with normal sleep patterns and normal energy levels. Then, with little warning, they’ll go to sleep for days or weeks at a time. So far, Louisa’s longest period in bed has been 13 days. Victims will wake briefly, but be disoriented and not fully awake. Louisa’s parents force her awake so she can use the bathroom and eat.
Now, Louisa’s friends can tell when a period is coming on. She stops talking and she may be annoyed easily. That’s when she knows she has to get home to her bed. Louisa has slept through family vacations, the dance recitals(表演会) she loves to perform in, and school tests. Now it becomes increasingly difficult to catch up on missed schoolwork.
But just as doctors don’t know the cause, they also don’t know why it ends as mysteriously as it began. The illness is unrelated to narcolepsy(嗜眠病), whose victims are constantly tired and drop off for brief periods of sleep at any time.
It’s so dramatic that some people have accused Louisa of making the false symptoms to get attention. Her father, Richard, thinks that’s absurd.The underlined “disoriented ” in the 3rd paragraph probably means________.
| A．embarrassed | B．disappointed |
| C．confused | D．happy |
Which is TRUE about Kleine-Levin Syndrome according to the passage?
| A．The victims usually sleep for days or weeks at a time. |
| B．There are usually many warning signs before it attacks the victims. |
| C．The victims are usually tired and in a bad mood. |
| D．There are more than 1, 000 victims in the world. |
We can learn from the passage that________.
| A．doctors have found the cure for Sleeping Beauty Sickness. |
| B．some people don’t believe in the truth of Louisa’s symptoms. |
| C．Kleine-Levin Syndrome has no effect on Louisa’s study and life. |
| D．the narcolepsy victims sleep longer than those with Kleine-Levin Syndrome. |
What can we learn about Louisa?
| A．Louisa is fond of dancing. |
| B．Louisa can still manage finish her schoolwork without difficulty. |
| C．Louisa is a British girl who likes sleeping. |
| D．Louisa’s longest sleeping period is 8 years. |
What is the best title of the passage?
| A．What is Narcolepsy |
| B．How Louisa Overcame the Difficulty |
| C．Rare Illness Turns a Girl into a “Sleeping Beauty” |
| D．The Latest Research on Kleine-Levin Syndrome. |
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