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These days we hear a lot about how air pollution is changing temperatures on the earth. New evidence from a mountaintop in China now suggests that pollution can also change the amount of rain and snow that falls in some places.
Usually, more rain falls in mountainous places than in flat areas upwind from the mountains. That’s because air can hold a lot of water. When wind blows wet air up a mountainside, the air gets colder. This temperature change often forces water to fall as rain or snow.
In recent years, however, many mountainous areas in the western United States have been getting less rain than normal. Mountains that are downwind from cities have experienced the biggest drops.
Some scientists have theorized(推理)that pollution drifts (趋势)from the cities into the mountains, affecting rainfall, but proving this link has been difficult.
Searching for answers, a team led by a scientist from the Hebrew University went to s mountain in China called Mount Hua, which is 2,060 meters tall and lies about 120 kilometers east of the Chinese city Xi’an. Since 1954, scientists have been collecting details about rainfall, humidity(湿度), and visibility(能见度)in the area.
Using this data, the scientists compared rainfall on Mount Hua to rainfall in the nearest city, Huayin, on days with different levels of visibility. When the air was clear and people could see as far as 20 km, the scientists found that 65% more rain fell on the mountain than in the city.
But when the air was smoggy, allowing only 8 km of visibility through the mist, the mountain received just 20% more rain than the city. The new data supports the theory that pollution affects rainfall.
Some scientists believe that there are other explanations for the numbers. It’s possible, for example, that natural particles(微粒)in the air, rather than particles produced by pollution, are affecting visibility.
According to the 1st paragraph, air pollution is changing the following EXCEPT ______.

A.the temperature B.the amount of rain
C.the habit of eating D.the amount of snow

According to the passage, what will probably happen when the wet air in the sky gets colder?

A.It will probably rain or snow B.It will probably be cloudy.
C.It will probably wind D.It will probably become dry.

Why did the team led by a scientist go to Mount Hua?

A.They wanted to pay a visit to Mount Hua.
B.They wanted to collect the data for their theory.
C.They wanted to measure Mount Hua.
D.They wanted to have a good rest on Mount Hua.

You can most probably read the passage in _______.

A.a travel guide
B.a telephone book
C.a cartoon book
D.a science book
科目 英语   题型 阅读理解   难度 容易
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It is only during the last few years that man has generally realized that in the world of nature a balance exists between all forms of life. No living thing can exist by itself. It is part of a system in which all forms of life are joined together. If we change one part of the nature order, this will almost certainly bring about changes in some other part.
The cutting of forests reduced the supply of oxygen. The killing of weeds and insects by chemicals led to the wide-spread poisoning of animals and birds. The throwing of waste products into the ocean hurt life in the sea, while waste gases changed the chemical balance of the atmosphere and shut out some of the sun’s necessary life-giving rays.
And so we could go on adding more examples until in despair(绝望) we might feel like giving up the struggle to control these harmful human activities. Man is very clever at changing the world around him to satisfy his immediate needs, but he is not so clever at looking far ahead, or at thinking about what the future results of his action might be. Man may well destroy himself because of his silly action.
The first paragraph tells us that _____.

A.all living things in nature depend on each other
B.everything in nature can’t exist without the help of man
C.man has known the importance of the balance of nature for a long time
D.no living thing can live naturally

In the second paragraph the examples given are used to prove that _____.

A.all forms of life belong to a system in which all the parts can be changed for one another
B.it is only during the last few years that man has generally known the balance of nature
C.there are some living things which can exist by themselves without change
D.we can’t change one form of life without destroying the balance of nature

The last paragraph suggests that in order to get his immediate benefits(利益) _____.

A.man is always anxious to control his activities within limits
B.man is always too eager in planning for distant future
C.man often fails to think about their future results of his action
D.man often feels that he will have to give up in despair

Which of the following is true according to the passage?

A.Cutting down woods does little harm to human beings.
B.Man has to pay much more attention to the future results of his present action.
C.Oxygen comes from forests.
D.The passage tells us to try our best to get as much as possible immediately.

It was one of the hottest days of the dry season. We had not seen rain in almost a month. The crops were dying. Cows had stopped giving milk. The streams were long gone back into the earth. If we didn't see some rain soon we would lose everything.
I was in the kitchen making lunch for my husband and his brothers when I saw my six-year old son, Billy, walking toward the woods. He was obviously walking with a great effort... trying to be as still as possible. Minutes after he disappeared into the woods, he came running out again, toward the house.
Moments later, however, he was once again walking in that slow purposeful long step toward the woods. This activity went on for over an hour: walking cautiously to the woods, then running back to the house. Finally, my curiosity got the best of me. I crept out of the house and followed him on his journey.
He was cupping both hands in front of him as he walked; being very careful not to spill the water he held in them. Branches and thorns slapped his little face but he did not try to avoid them. He had a much greater purpose. As I leaned in to spy on him, I saw the most amazing site.
Several large deer appeared threatening in front of him. But Billy walked right up to them. I almost screamed for him to get away. And I saw a baby deer lying on the ground, obviously suffering from heavy loss of water and heat exhaustion, lift its head with great effort to lap up the water cupped in my beautiful boy's hand.
I stood on the edge of the woods watching the most beautiful heart I have ever known working so hard to save a life. As the tears that rolled down my face began to hit the ground, they were suddenly joined by other drops... and more drops... and more. I looked up at the sky. It was as if God, Himself, was weeping with pride.
Why did the author follow her son?

A.Because there might be danger.
B.Because her son was doing a good deed.
C.Because she intended to help.
D.Because she was curious.

Which of the following statements is Not True according to the passage?

A.Rain was in great need.
B.Billy carried water with his small hands.
C.There were few trees in the woods.
D.Billy walked into the woods and then returned over and over again.

Which is the correct order of the development of the story?
①The author was moved to tears.
②Billy fed the water to the baby deer.
③Billy walked towards the large deer.
④It began to rain.
⑤The author followed Billy into the woods.

A.③②⑤①④ B.⑤③②①④
C.④①③②⑤ D.⑤②①③④

At the end of the story, the author might experience different feelings Except that _____

A.Billy was a pride.
B.God was touched by Billy's activity.
C.the rain should have dropped earlier.
D.it was worthwhile to have given birth to Billy.

Reading is a great way to improve your English. You'll learn new words, revise previously-taught structures and absorb thousands of useful expressions and phrases... without any effort. By reading, you are receiving valuable language input. And this is how you learn! Remember, language learning is a combination of input + practice. As you're reading, you're taking in language naturally, and you're seeing how it all fits together. This is crucial to your learning.
The great thing about reading is that learning takes place subconsciously. There are no exercises to do, no grammar rules to learn, no tasks to complete... it's all natural. The language flows in through your eyes, and gets recorded in your brain. What could be easier?
The key to effective reading is to read things that you want to read. There are millions of books, magazines and websites out there. You couldn't possibly read them all. So, the important thing is to find things that you like reading. Then, you'll be motivated to read. And then the reading won't be difficult. It'll be easy! And then you'll learn. It's simple.
Remember: read what you want to read. What you like reading. What motivates and inspires you. But where can you start? Well, you could read a book that you've already read in your own language. Simply find a translated version of a book that you have read and enjoyed. This will make processing the content in the target language much easier as you’ll already know what the book is about! You could also read the news. This is great as you can read the news in your own language first, then in English. You'll see that it won't be too difficult as you'll be familiar with the topics and stories. Magazines are also great. Find one that covers a topic you're interested in: business, clothing, guns, horses, houses, housekeeping, stocks and shares, sports, computers, electronics, designing, cooking... you name it, they'll have it. If not, look for information on the internet. There are also websites for every topic under the sun! Why not join a forum? They're a great source of English input as the language is often written in a simple, spoken style. Go to Google Groups, which has discussion groups based on common interests. Just type in the topic that interests you and join the chat.
Finally, how you read is also important. The best thing is to read without using a dictionary. Let the words flow over you. Just skip the parts you don't understand. If you make your reading feel too much like work, it'll stop being fun. Of course, you could make a note of any new words and phrases that you like or see repeated frequently, but try not to break your concentration too much. Also, set yourself mini-objectives. For example, if you're reading a novel, read 20 pages a day. Very soon, you'll have been exposed to thousands of useful phrases and words. Have fun reading! You'll learn so much!
The underlined word “crucial” in the first paragraph is closest in meaning to ________.

A.easy B.important C.difficult D.suitable

The key to effective reading is _______.

A.to read millions of books B.not to learn grammar rules
C.to be motivated to read D.to read easy things

You can start to read by ____.

A.reading a book that you've already read in English
B.reading the news in English first
C.going to Google Groups to practice spoken English
D.reading magazines containing topics you are interested in

From the passage we can learn that ______.

A.when you read you needn’t look up every new word in the dictionary
B.the great thing about reading is that you can read without any effort
C.to read is as much fun as to work
D.you should make notes of every new word and phrase while reading

Dear John,
My name is Amber and I want to share my story with you because what you've shared about life and positive energy has changed my life. This past year has been one of the hardest for me. I felt I was stuck in a position that had nothing to do with what I wanted to do with my life. In January, after two years of being together, my boyfriend left me.
I read your blog every morning as I drink my coffee at work, but it wasn't until this March that I told myself "no more negativity" as you taught readers in your blog.
Since then I've got into new habits at work to keep my energy positive. When people walk in the front door, I'm the first face they see, so I smile big when I say "good morning" to them, especially on Mondays. Instead of waiting for someone to ask me for help, I offer it with an open mind. The CEO noticed my change and offered me the executive assistant position that I wanted.
One of the biggest things I've taken to heart from your blog is changing my opinions on my job. Yes, it was not an important position, but when I was passionate (热情的) about it, I could make my life fulfilling.
All in all, I have to thank you somehow for having the passion to help others because it truly is inspiring to me. So thank you so much, John. My life has changed because your words pointed me in the right direction, Take care!
Sincerely ,
Amber
Amber wrote the letter mainly to______

A.introduce herself to John B.talk about her bad year
C.ask for some advice D.express her thanks

We can infer from the passage that Amber______

A.didn't like her boyfriend
B.spent a lot of time online
C.wasn't satisfied with her job
D.received very good education

What is implied about John in the letter?

A.He is a very famous writer.
B.He used to live a very negative life.
C.He doesn't like sharing his life stories.
D.He likes helping others through writing positive blogs.

What does Amber's change tell us?

A.Practice makes perfect.
B.Bad luck doesn't exist long.
C.A positive attitude is rewarding.
D.A friend in need is a friend indeed.

Founded in 1764 by French traders, St. Louis today is the fifteenth largest urban area in the United States. There are many attractive destinations for tourists.
American Kennel Club Museum of the Dog
Dog lovers who visit St. Louis won’t want to miss this 14,000-square-foot museum. Inside are over 500 paintings, prints, watercolors, and a variety of other dog art objects.
The Museum is open year round, Tuesday through Saturday 10 AM to 4 PM, and Sunday 1 PM to 5 PM. Admission is $1 for children up to 13, $2.50 for senior citizens, and $5 for others.
Anheuser Busch Brewery
The Anheuser Buxch Brewery tour is not just for beer lovers. The tour includes the historic Brew House. Then the tour continues to the modern Bevo Packaging Plant. The best will be the Budweiser Clydesdale stables. The tours are always free.
Gateway Arch
Designed by Eero Sarinen and Hannskari Bandel, it took over two years and 900 tons of stainless steel to build. It is the tallest of the country’s National Monuments. The Arch is part of the Jefferson National Expansion Memorial. About one milion people per year come to the top of the Arch, where there is an observation platform providing a great view of the city.
St. Louis Zoo
First version of the St. Louis Zoo opened in 1904 at the St. Louis World’s Fair, but in the century since it has grown into one of the foremost zoos in the world. The Zooline Raiload passenger train takes visitors around the Zoo, which contains over 9,000 animals of over 800 species.
The Zoo is open every day but Christmas and New Year, with summer hours of 8 AM to 7 PM, and hours the rest of the year of 9 AM to 5 PM. Admission to the Zoo is free.
If a senior high school student plans to visit American Kennel Club Museum of the Dog with his parents and his five-year-old brother, he has to pay ______.

A.$8.5 B.$12 C.$13.5 D.$16

Which of the following statements about Gateway Arch is TRUE?

A.It was built in three years.
B.You can see the city clearly on the top of the Arch.
C.It is the largest of the country’s National Monuments.
D.President Jefferson was buried there.

If you plan to visit St. Louis Zoo, you can go there ______.

A.at 8:30 am in summer B.at 5:30 pm in autumn
C.on Christmas D.on New Year

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