The temperature of the sun is over 5000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees at the center.The sun is so much hotter than die earth that matter can exist only as a gas, except at the core.In the core of the sun, the pressures are so great against the gases that, despite the high temperature, there may be a small solid core.However, no one really knows, since the center of the sun can never be directly observed.
Solar astronomers do know that the sun is divided into five layers or zones.Starting at the outside and going down into the sun, the zones are the corona, chromosphere, photosphere, convection zone and finally the core.The first three zones are regarded as the sun's atmosphere.
But since the sun has no solid surface, it is hard to tell where the atmosphere ends and the main
body of the sun begins.
The sun's outermost layer begins about 10000 miles above the visible surface and goes outward for mllions of miles.This is the only part of the sun that can be seen during an eclipse(日食) such as the one in February 1979.At any other time, the corona can be seen only when special instruments are used on cameras and telescopes to shut out the glare of the sun's rays.
The corona is a brilliant, pearly white, filmy light, about as bright as the full moon.Its beautiful rays are a sensational sight during an eclipse.The corona's rays flash out in a brilliant fan that has wispy spikelike(一束束穗狀) rays near the sun's north and south poles.The corona is thickest at the sun's equator.
The corona rays are made up of gases streaming outward at tremendous speeds sad reaching a temperature of more than 2 million degrees Fahrenheit.The rays of gas thin out as they reach the space around the planets.By the time the sun's corona rays reach the Earth, they are weak and invisible.
小題1:Matter on the aim can exist only in fee form of gas because of the sun's ___.
A.sizeB.a(chǎn)geC.locationD.temperature
小題2:All of the following are parts of the sun's atmosphere EXCEPT the ___.
A.coronaB.chromosphereC.photosphere D.core
小題3:According to the passage, as the corona ra5,'s reach -die plaasts, they become ___.
A.hotterB.clearer C.thinnerD.stronger
小題4:Which of 'die following do the paragraphs following the passage most likely discuss?
A.The remaining layers of the sun.
B.The evolution of the sun to its present form.
C.The eclipse of February 1979.
D.All the above.

小題1:D
小題2:D
小題3:C
小題4:A
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科目:高中英語 來源:不詳 題型:閱讀理解

Life on earth depends on water, and there is no substitute for it. The current assumption is that our basic needs for water — whether for drinking, agriculture, industry or the raising of fish will always have to be met . Given that premise (前提), there are two basic routes we can go: more equal access to water or better engineering solutions.
Looking at the engineering solution first, a lot of my research concentrates on what happens to wetlands when you build dams in river basins, particularly in Africa. The ecology of such areas is almost entirely driven by the seasonal changes of the river — the pulse of the water. And the fact is that if you build a dam, you generally spoil the downstream ecology. In the past, such problems have been hidden by a lack of information. But in the near future, governments will have no excuse for their ignorance.
The engineers’ ability to control water flows has created new kinds of unpredictability, too. Dams in Africa have meant fewer fish, less grazing and less floodplain (洪泛區(qū)) agriculture — none of which were expected. And their average economic life is assumed to be thirty years. Dams don’t exist forever, but what will replace them is not clear.
The challenge for the future is to find new means of controlling water. Although GM technology (轉(zhuǎn)基因) will allow us to breed better dry-land crops, there is no market for companies to develop crops suitable for the micro-climates of the Sahel and elsewhere in Africa. Who is going to pay for research on locally appropriate crops in the Third World?
小題1:What’s the main idea of this passage?
A.The engineering solutions to water resource and their limitation.
B.The challenge for the future.
C.The basic means of controlling water.
D.The challenge for developing crops.
小題2: Which of the following statements is NOT true for meeting our basic needs for water?
A.Water resource should be used more reasonably.
B.More dams should be built in river basins.
C.More wetlands should be protected from destruction.
D.More dry-land crops could be developed in Africa.
小題3: The author suggests that governments will have no excuse for their careless ignorance in the future because        .
A.The ecological destruction will be known to the public by researchers
B.The ecological destruction will no longer be a problem in the future
C.The future is an information age
D.Governments will face greater challenge in the future
小題4:The author mentions all the problems caused by dams EXCEPT          .
A.fewer fish B.less grazing land
C.less floodplain agriculture D.less farming land
小題5:The last sentence probably implies that          .
A.No one will invest in developing locally appropriate crops in Africa
B.Researchers have no interest in developing dry-land crops
C.Research on locally appropriate crops in the Third World may be profitable
D.There is less water resource in the Third World

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科目:高中英語 來源:不詳 題型:閱讀理解

Review by Rose at midwestbookreview.com
Written by Johannah Biuedorm, My Mommy ,My Teacher is an enjoyable, full-color, children’s picture book about a little girl who learns from her family how to work on a farm..
Review by Dena wood at timestales.com
My Mommy ,My Teacher is a delighrful story of a little girl who shares the events(事情) of her daily life as she works, learns and plays with her family. the beautiful country life of this home-schooling family offers a feeling of peace, safety and meaning to both children and grown-ups. Love, respect, responsibility(責(zé)任) and joy are very easy to find as we follow this littile girl through her day.
Review by Britta McColl at morningstarlearning.com
I just read it to my daughters last night, and we all enjoyed it so much. My 13-year-old son who was listening said, “We should have home-school like that !”There are several things that appealed to him:
The farm (chickens and strawberries),the parrot, the love and joy .This is really a wonderful book for both parents and children.
Review by Rebekan Wilson at hopechestlegacy.com
If you have ever had a hard home—schooling day, and if you are ever unhappy and ready to cry ,take out this simple little book and allow the story and picture to wash your heart clean, think again why you are doing what you do, and open your heart to your children once more. Surely you will feel much better.
小題1:According to Rose ,all of the following about My Mommy ,My Teacher is true EXCEPT that         
A.it is an enjoyable bookB.it is a full—color book
C.it is mainly about a motherD.it’s a story that happens on a farm
小題2:Which of the following was probably NOT found by Dena Wood in the little girl’s day?
A.LoveB.RespectC.ResponsibilityD.danger
小題3:What does the underlined phrase “appealed to” in the passage mean?
A.AttractedB.SurprisedC.ScaredD.Danger
小題4:We can learn from the passage that____.
A.Johannah Blurdorn spent her chidhood in a big city
B.Britta McColl has two daughters and one son
C.the little girl in the book lives a very happy life
D.Rebekah Wilson has never cried since she read the book
小題5:Where are the reviews most probably taken from?
A.Newspaper.B.Magazine.C.Radio program.D.Website.

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科目:高中英語 來源:不詳 題型:閱讀理解

Fire fighting is a serous matter, knowing what to do during a fire can save people’s lives. It is important to know the ways you can use and show them to everyone else in the family, such as stairways and emergency exits, but not elevators.
From the lower floors of building, escape through windows is possible. Learn the best way to get out from a window with the least chance of serious injury.
The second floor window is usually not very high from the ground. An average person, hanging by the fingertips will have a drop of about 6 feet to the ground. It is about twice the height of an average man. Of course, it is safer to jump a short way down than to stay in a burning building.
Windows are also useful when you are waiting for help. Be sure to keep the door closed before opening the window. Otherwise, smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may have leaked into the room.
On the second or third floor, the best windows for escape are those which open onto a roof. From the roof a person can drop to the ground more safely. Dropping onto cement might end in injury. Bushes and trees can help you to have a soft landing.
小題1:Which of the following should not be used when trying to escape from a fire?
A.Windows B.ElevatorsC.Fire exitsD.Stairways
小題2:How far from the ground is the second floor window?
A.a(chǎn)bout 12 feetB.a(chǎn)bout 6 feet
C.a(chǎn)bout the height of an average manD.nearly 10 feet
小題3:According to the passage, windows are ______ of escaping a fire?
A.the only wayB.the best way
C.safer than any other waysD.one of the possible ways
小題4:The writer suggests that _______
A.breathing in smoke might be harmfulB.smoke will enter the room through an open window
C.fresh air can’t reach the second floor window
D.to keep you head low will help you to escape a fire
小題5:If you are on the second or third floor when a fire breaks out, you’d better _____
A.drop directly onto the groundB.first drop onto a roof then onto the cement
C.drop from a roof window then onto bushes and trees
D.drop onto the cement rather than bushes and grass

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科目:高中英語 來源:不詳 題型:閱讀理解

With only about 1,000 pandas left in the world, China is desperately trying to clone (克隆) the animal and save the endangered species(物種). That's a move similar to what a Texas A&M University researchers have been undertaking for the past five years in a project called “Noah's Ark”.
Noah's Ark is aimed at collecting eggs, embryos(胚胎),semen and DNA of endangered animals and storing them in liquid nitrogen(氮). If certain species should become extinct , Dr. Duane Kraemar, a professor in Texas A&M University Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2,000 species of mammals , birds reptiles will become extinct in over 100 years . The panda, native only to China , is in danger of becoming extinct in the next 25 years .
This week , Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit . They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy(having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort, ”adds Kraemer, who is one of the leaders of the Project at Texas A & M, the first–ever attempt at cloning a dog.
“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”
小題1: The aim of “Noah’s Ark” project is to ________.
A.make efforts to clone the endangered pandas
B.save endangered animals from dying out
C.collect DNA of endangered animals to study
D.transfer the nuclear of one animal to another
小題2:According to Professor Kraemer , the major problem in cloning pandas would be the lack of _______.
A.a(chǎn)vailable panda eggsB.host animals
C.qualified researchersD.enough money
小題3:The best title for the passage may be ______.
A.China’s Success in Panda Cloning
B.The First Cloned Panda in the World
C.Exploring the Possibility to Clone Pandas
D.China---the Native Place of Pandas Forever

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科目:高中英語 來源:不詳 題型:閱讀理解

Imagine that the genome (基因組) is a book. The book consists of 23 chapters with thousands of stories made up of paragraphs, words and letters on different levels. There are one billion words in the book, which makes it longer than 5,000 volumes the size of this book, or as long as 800 Bibles. If I read the genome out to you at the rate of one word per second for eight hours a day, it would take me a century. If I wrote out the human genome, one letter per millimeter, my text would be as long as the River Danube. This is an enormous document. A huge volume, a cook book of great length, and it all fits inside the extremely small nucleus (核) of a tiny cell that fits easily upon the head of a pin.
The idea of the genome as a book is not, strictly speaking, even a metaphor (比喻), It is true to a great extent. A book is a piece of digital information, written in one-directional form and defined by a code that translates a small alphabet of letters into a large dictionary of meanings through the order of their groupings. So is a genome. The only complication is that all English books read from left to right, while some parts of the genome read from left to right, and some from right to left, though never both at the same time.
While English books are written in words of different lengths using twenty-six letters. Genomes are written entirely in three-letter words, using only four letters, And instead of being written on flat pages, they are written on long chains of DNA molecules (分子), The genome is a very clever book, because in the right conditions it can both photocopy itself and read itself.
小題1:How do human genomes read according to the passage?
A.Only from left to right.B.Only from right to left.
C.From both directions at the same timeD.From one direction at a time
小題2:We can learn from the passage that the human genome ______.
A.is as long as the River Danube
B.can be easily placed on the head of a pin
C.is coded with and alphabet of four letters
D.is smart enough to read and take photos of itself
小題3:It can be concluded that the passage is mainly written for ______.
A.specialists in the field B.general readers
C.natural scientistsD.readers with academic background
小題4:The real purpose of the author’s comparison of the genome to a book is ______.
A.to focus on the differences between the two
B.to lay emphasis on the similarities between the two
C.to simplify the concept of the human genome
D.to give an exact description of the human genome

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科目:高中英語 來源:不詳 題型:閱讀理解

In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet(彗星). When the fragment(碎片)landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet?
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the Earth. The news has caused panic.
On 17 July, a fragment four kilometers wide enters the Earth’s atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia.
Millions of people are already dead in the southern part of the Earth, but the north won’t escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs(恐龍)were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn’t survive in the cold climate that followed and they became extinct. Will we meet the same end?
小題1: Which of the following is NOT TRUE according to the author’s description of the disaster in 2094?
The whole mankind becomes extinct.
All the coastal cities in African are destroyed.
The whole world becomes extremely cold.
The visit of the comet results in wars.
小題2:Why does the author mention dinosaurs at the end of the passage?
A.Because they could only live in the warm climate.
B.Because they once dominated the Earth.
C.Because dinosaurs and humans never live in the same age.
D.Because their extinction indicates future disasters
小題3: In writing the passage, the author intends to __________.
A.give an accurate description of the possible disaster in the future
B.warn of a possible disaster in the future
C.tell the historical development of the Earth
D.prove that humans will sooner or later be destroyed
小題4:It can be concluded that the passage is most probably part of a(n) __________.
A.horror storyB.news report
C.a(chǎn)rticle of popular scienceD.research paper

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科目:高中英語 來源:不詳 題型:閱讀理解

Damage to Ozone Layer Gets Worse
In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer.The warning: The sun's summertime rays are more dangerous than once thought.
A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone(臭氧層)in the atmosphere, which protects humans from harmful levels of ultraviolet(紫外線)radiation, will be thinner over the United States this summer.The thinner layer allows more ultraviolet rays from the sun to reach Earth.The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.
Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter.The hole was caused in chemicals used in refrigerators and air conditioners.When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.
Concern about the protective ozone layer rose more recently when data from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica.Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.
Although many countries have already begun stopping the use of ozone-destroying chemicals, the new findings are expected to advance the timetable for a total ban of the chemicals.
小題1:The scientists have observed the ozone layer ______.
A.since 1980B.since last winter
C.for more than 20 yearsD.for about one year
小題2:The ozone layer in the atmosphere can ______.
A.do a lot of good to human beings in many ways
B.protect humans from diseases caused by bad weather
C.do a lot of harm to human beings in the summer-time
D.protect humans from harmful levels of ultraviolet radiation
小題3:Scientists first found that there was a hole in the ozone layer ______.
A.a(chǎn)bove Arctic during the winter in the mid-1980s
B.a(chǎn)bove Antarctica during the winter in the mid-1980s
C.over somewhere in the north of the equator in 1980
D.over the USA in the summertime in the mid-1980s
小題4:The damage to the ozone layer was caused by ______.
A.the changeable weatherB.ozone-destroying chemicals
C.chemicals from refrigeratorsD.chemicals from air conditioners

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科目:高中英語 來源:不詳 題型:閱讀理解

Honestly, since my son was born, I have thought a lot about how to raise a child. I once heard a story that told about when a baby was born. The story said that when a baby was born, a new master was born. The parents of that baby would become the servants. The question is: Why? Based on my observation, this phenomenon is true. Most parents who don't pay much attention to their kids have difficulties with their kids' attitude.
I'll make a comparison of how two families raise their children. The first one is a family with three children. Both mother and father never say "No" to their children's demands. As a result, all of their children became stubborn and won't listen to their parents’ words, "We can't."
The second family educated their children strictly from one year old to high school. The parents never approved or agreed directly to give their children what they wanted. They always postponed one or two days, even if they could afford it. Due to the way their parents educated them, these children understood that if they wanted something, they had to wait or they had to make an effort first. As a result, all the kids from the second family successfully graduated from university on time.
In my opinion, if we want to be successful parents and raise our children well, we have to start disciplining them when they are toddlers but not wait until they become teenagers.
小題1:Why did the writer give two different stories in this passage?
A.To help prove his opinion about raising a child.
B.To list different ways that parents may take.
C.To criticize some parents’ foolish action.
D.To prove that his way of education is right.
小題2:What does the underlined word “postponed” in the third paragraph mean?
A.Carried out at once.B.Gave up.
C.Put off.D.Made a decision.
小題3: In the writer’s opinion, which of the following about raising a child is TRUE?
A.Children should be respected once they were born.
B.Parents should educate their children as early as possible.
C.It is right time to educate their children when they are teenagers.
D.Children should be helped whenever they make mistakes.
小題4: What do you think is the best title of this passage?
A.Make a comparison of how two families raise their children
B.To be successful parents
C.How to raise children well
D.Educate children strictly from one year old to high school

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