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DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure. Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
1. From the passage, we can know that a boy looks like his parents because______.
A. he is son of his parents.
B. his parents’ DNA decides his appearance.
C. he has received DNA from his father or his mother.
D. scientists have put some of his parents’ DNA into him.
2.What does the underlined expression “let loose” probably mean?
A. let … go free B. get rid of
C. absorb D. survive
3. What is the best title for the passage?
A. The DNA Research in Japan
B. A New Way of DNA Research in Japan.
C. The Causes and Effects of DNA Research
D. The Advantages And Disadvantages of RDNA
4. The following statements are true about RDNA research EXCEPT ______.
A. the research has been stopped because the created animals carry viruses
B. “super-trees” might be widely planted around the world
C. scientists have not completely understood DNA
D. RDNA research will benefit human beings a lot
5.You might find this passage in / on a ________.
A. fashion magazine B. novel C. scientific newspaper D. sports newspaper
高二英语阅读理解中等难度题查看答案及解析
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阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。
One of the most important discoveries during this period was how 1. (draw) things in perspective. This technique was first used by Masaccio in 1428. When people first saw his paintings, they 2.(convince) that they were looking through a hole in a wall at a real scene. 3.coincidence, oil paints were also developed at this time, which made the colors used in paintings look 4.(rich) and deeper. Without the new paints and the new technique, we would not be able to see the many great masterpieces for 5.this period is famous.
In 6.late 19th century, Europe changed a lot, from a mostly agricultural society to a mostly 7.(industry) one. Many people moved from the countryside to the new cities. There were many new inventions and social changes. 8.(nature), these changes also led to new painting styles. Among the painters who 9.(break) away from the traditional style of painting were the Impressionists10. (live) and working in Paris.
高二英语语法填空困难题查看答案及解析
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Theater is one of the oldest and most important art forms in world culture, it is also one of the richest art forms. Many people work together to bring a play to life. There are playwrights, directors, set designers, costumers, lighting technicians, and, of course, actors. If the performance is a musical, the skills of a songwriter, a choreographer, and musicians are also required. The excitement of opening night can be felt by the people waiting to watch a performance and by the performers and workers backstage waiting for the curtain to go up. Live theater is thrilling because no one really knows how well the play will go until it is performed.
The word theater comes from the Greek theatron, which means “a place for seeing.” One concept from Greek theater that is still seen in some plays today is the “Greek Chorus”. This consists of several actors or characters watching the action of the play(almost like the audience) and then commenting on what whey just saw with either reactions or dialogue.
Although most people think of the theater in terms of a play performed on the stage, theater has taken on a much broader meaning in the modern world. You may find yourself walking into a theater with no seats in the rows. Instead, you are seated among the set pieces, which makes you part of the setting. Sometimes theater may come to life on a street corner, or in a classroom. The excitement of theater is in its very nature----it is an art form that changes as it is interpreted(诠释) in different ways by different people. That is probably why the works of the greatest playwright of all time, William Shakespeare, are still performed and enjoyed today, both in classic and new interpretations.
1.What does the word “richest” in Paragraph 1 probably mean?
A. diverse. B. wealthy. C. terrifying. D. entertaining.
2.Why is live theater so exciting according to the text?
A. Plays are usually well written. B. It is often interpreted by skilled actors.
C. No one can predict its success or failure. D. There are so many people working on it.
3.What is suggested about the plays of Shakespeare in the text?
A. They are more often given new interpretations today than in the past.
B. They are more popular today than during Shakespeare’ s time.
C. They will always be considered the world’s greatest.
D. They have been performed in a variety of ways.
4.What is the best title for the text?
A. A vital part of theater: Greek Chorus B. Modern theater: adventures in acting
C. Shakespeare: our greatest playwright D. Theater: an exciting art form
高二英语阅读理解中等难度题查看答案及解析
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Football is, I believe, the most popular game in England: one has only to go to one of the important matches to see this. Rich and poor, young and old, one can see them all there, shouting for their teams. One of the most surprising things about football in England is the great knowledge of the game which even the smallest boy seems to have. He can tell you the names of the players in most of the important teams. He has pictures of them and knows the results of large numbers of matches. He will tell you who he thinks will win such a match, and his opinion is usually as good as that of men three or four times of his age.
Most schools in England take football seriously（认真地）— much more seriously than nearly all European schools, where lessons are all very important and games are left for the children themselves. In England it is believed that education is not only a matter of filling a boy’s mind with facts in the classroom; education also means the training of character by means of games, especially team games, where the boy or girl has to learn to work with others for his or her team instead of working for himself or herself alone. Therefore the school plans games and matches for its students. Football is a good team game. It is good both for the body and the mind. That is why it is every school’s game in England.
1.Football games are very popular in England among _____________.
A. all the people B. grown-ups
C. boys only D. boys and girls
2.In England, a boy’s opinion of a match is often______________ .
A. three or four times better than that of a man
B. worse than that of a man
C. as good as that of a man
D. worth thinking three or four times
3.In England, education means _________________ .
A. filling a boy’s mind with stories
B. more than the teaching of knowledge
C. the teaching of knowledge only
D. training character by means of football games
4.We can use_______ instead of the underlined word “therefore”
A. however B. as a result
C. why D. at that place
5.From the passage, we learn that _______________.
A. schools in England make use of football games for the training of character
B. England is better than all the European countries
C. football is more important than lessons
D. only some schools in England have football game
高二英语阅读理解中等难度题查看答案及解析
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Football is, I believe, the most popular game in England: one has only to go to one of the important matches to see this. Rich and poor, young and old, one can see them all there, shouting for their teams. One of the most surprising things about football in England is the great knowledge of the game which even the smallest boy seems to have. He can tell you the names of the players in most of the important teams. He has pictures of them and knows the results of large numbers of matches. He will tell you who he thinks will win such a match, and his opinion is usually as good as that of men three or four times of his age.
Most schools in England take football seriously（认真地）— much more seriously than nearly all European schools, where lessons are all very important and games are left for the children themselves. In England it is believed that education is not only a matter of filling a boy’s mind with facts in the classroom; education also means the training of character by means of games, especially team games, where the boy or girl has to learn to work with others for his or her team instead of working for himself or herself alone. Therefore the school plans games and matches for its students. Football is a good team game. It is good both for the body and the mind. That is why it is every school’s game in England.
1.Football games are very popular in England among _____________ .
A. all the people B. grown-ups
C. boys only D. boys and girls
2.In England, a boy’s opinion of a match is often______________.
A. three or four times better than that of a man
B. worse than that of a man
C. as good as that of a man
D. worth thinking three or four times
3.In England, education means _________________ .
A. filling a boy’s mind with stories
B. more than the teaching of knowledge
C. the teaching of knowledge only
D. training character by means of football games
4.We can use_______ instead of the underlined word “therefore”
A. however B. as a result
C. why D. at that place
5.From the passage, we learn that ________________ .
A. schools in England make use of football games for the training of character
B. England is better than all the European countries
C. football is more important than lessons
D. only some schools in England have football game
高二英语阅读理解中等难度题查看答案及解析
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The Rio Grande
Although not the longest in America, the Rio Grande is one of the most important. But, unlike other significant rivers, it is not used for shipping. In fact, ocean-going ships cannot sail on its water. 1. Since 1846, it has been the official border of Texas and Mexico.
Rio Grande Geography
The Rio Grande is either the fourth or fifth longest river system in North America. It all depends on how it is measured. 2. and these course movements can cause it to be longer or shorter. At its last official measure, the Rio Grande clocked in at 1896 miles. The river starts in Colorado and extends downward to the Gulf of Mexico. 3. Not only does the river extend south, but it also starts in the mountains and gets lower and lower in altitude as it extends to the Gulf.
The Rio Grande Today
4. Sadly, much of the water has been used up and parts of the river are most dry! This is because people take more water from the river than the river can get back from rain and other sources. Experts are working to correct this, though, with the hopes of restoring the river to its past strength.
Today, the river is important as a source of water for Texas and Mexicans. 5. Though borders like the Rio Grande separate nations, they are also shared spaces. The Rio Grande is therefore a symbol of friendship and peace between two peoples.
A. Usually, it is measured by length.
B. Downward is the best way of describing it too.
C. What makes the Rio Grande so important is its location.
D. Because the river twists so much, it occasionally changes course.
E. The Rio Grande today is mostly used as a source of drinking water.
F. More importantly, it is a symbol of cooperation between two nations.
G. Today, the Rio Grande is the destination of tourists from all over the world.
高二英语七选五中等难度题查看答案及解析
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Choosing the right job is probably one of the most important decisions we have to make in life, and it is frequently one of the hardest decisions we have to make. One important question that you might ask yourself is: “How do I get a good job?”___1.____.
There are people who can answer an insignificant advertisement in the local paper and land the best job in the world; others write to all sorts of places all over the country, and never seem to get a reply at all. Still others believe that the in-person, door-to-door approach is by far the best way to get a job; and then there are those who, through no active decision of their own, just seem to be in the right place at the right time. ___2.___. He used to spend a lot of his free time down by the sea watching the tall ships, but never thinking that he might one day sail one of them. His father was a farmer, and being a sailor could never be anything for the boy but an idle dream. One day, on his usual wandering, he heard the captain of the ship complaining that he could not sail because one member of his crew was sick. Without stopping to think, the lad（少年） offered to take his place. __3.__.
_4.__. If the lad had gone home to ponder（考虑）his decision for a week, he may have missed his chance. It is one thing to be offered an opportunity; it is another thing to take it and use it well.
Sometimes we hear stories about people who break all the rules and still seem to land plum jobs（美差）. When you go for a job interview or fill out an application, you are expected to say nice things about the company to which you are applying. __5.___ And within a year this person had become general manger of the company.
A．This story also illustrates the importance of seizing an opportunity when it presents itself.
B．People find jobs in an infinite number of ways.
C．it’s almost impossible to find a good job by answering advertisement in newspapers
D．Take for example the young man who wanted to be a sailor.
E．But there was one person who landed an excellent job by telling the interviewer all the company’s faults.
F．He spent the rest of his life happily sailing the ships he had always loved.
G．It is very important to seize an opportunity when it presents itself.
高二英语信息匹配中等难度题查看答案及解析
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Choosing the right job is probably one of the most important decisions we have to make in life, and it is frequently one of the hardest decisions we have to make. One important question that you might ask yourself is: “How do I get a good job?”__1.___.
There are people who can answer an insignificant advertisement in the local paper and land the best job in the world; others write to all sorts of places all over the country, and never seem to get a reply at all. Still others believe that the in-person, door-to-door approach is by far the best way to get a job; and then there are those who, through no active decision of their own, just seem to be in the right place at the right time. __2.____. He used to spend a lot of his free time down by the sea watching the tall ships, but never thinking that he might one day sail one of them. His father was a farmer, and being a sailor could never be anything for the boy but an idle dream. One day, on his usual wandering, he heard the captain of the ship complaining that he could not sail because one member of his crew was sick. Without stopping to think, the lad(少年) offered to take his place. __3.__.
_4.___. If the lad had gone home to ponder（考虑）his decision for a week, he may have missed his chance. It is one thing to be offered an opportunity; it is another thing to take it and use it well.
Sometimes we hear stories about people who break all the rules and still seem to land plum jobs（美差）. When you go for a job interview or fill out an application, you are expected to say nice things about the company to which you are applying. _5.___ And within a year this person had become general manger of the company.
A．This story also illustrates the importance of seizing an opportunity when it presents itself.
B．People find jobs in an infinite number of ways.
C．it’s almost impossible to find a good job by answering advertisement in newspapers
D．Take for example the young man who wanted to be a sailor.
E．But there was one person who landed an excellent job by telling the interviewer all the company’s faults.
F．He spent the rest of his life happily sailing the ships he had always loved.
G．It is very important to seize an opportunity when it presents itself.
高二英语其他题中等难度题查看答案及解析
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When you do business online, remember one of the most important factors in online success is list building. No matter what goals you’re seeking with your online activities, building a good contact list is vital for a successful outcome. List building plays a major role in developing good relationships with your site’s customers, and visitors. It can be used to get more sales for your site or business. For these reasons contact building should be high on your list when you’re marketing or promoting on the web. Fortunately, list building is an easy process that any site or webmaster can quickly set up as long as you understand two simple elements. To be really successful, your list building must combine these two key elements. Without these you will probably find building your contact list difficult and slow going. So it is worth your while to fully understand these two factors in your list building.
Value－It should offer important information, quality content, special deals / discounts, and more importantly, it should offer a valuable relationship or connection to an expert in the subject area of the list.
Subscribers (订户) must benefit from joining your list. If you’re building a list, just write down all the benefits someone would receive from joining your site or list, including receiving important information, getting special valuable content, receiving special deals / discounts, getting training videos and getting timely announcements or news. Don’t forget there may also be a psychological reason for joining your list－many people like being part of a group or membership site. It’s human nature. Everybody likes to feel included.
Free whatever you offer－make sure it is Free. The quickest way to build any list is to give away free valuable content, information, videos, reports, e-books, discounts, prizes... everybody loves a free gift. Just make them an offer they can’t refuse. This has more to do with the nature of your gift and the kind of contacts you’re building－giving away free buying guides on how to purchase real estate, fast cars, LCD TVs, laptops... will definitely attract the right “buying customer”. If you’re into selling, you just have to adjust your marketing to combine the free element correctly. In addition, giving away something free is the first step in starting an ongoing relationship with your subscribers. It gets the ball rolling.
高二英语填空题中等难度题查看答案及解析
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One of the most important things in education is to let students ____ positive emotions and experience in the process of their learning.
A. require B. acquire C. demand D. clarify
高二英语单项填空中等难度题查看答案及解析