阅读理解。     Planting trees around poultry (家禽) farms can improve air and water qua

阅读理解。     Planting trees around poultry (家禽) farms can improve air and water qua

题型:上海模拟题难度:来源:
阅读理解。     Planting trees around poultry (家禽) farms can improve air and water quality - and relations with
neighbors. Research has shown that just three rows of trees near poultry houses can reduce the release
of dust and ammonia (氨). They can also reduce the strong smell of ammonia gas.
     The trees capture dust, ammonia and smells in their leaves. They can also reduce energy use. They
also provide shade from the sun, so they reduce cooling costs in summer. And they act as a windbreak,
so they reduce heating costs in winter. Trees can also improve water quality around farms by removing
pollutions from soil and groundwater.
     Several years ago, people were objecting to the smell of poultry farms on the Delmarva Peninsula in
the eastern United States. Delmarva is where the states of Delaware, Maryland and Virginia come
together. Two thousand farms there can each house an average of seventy-five thousand chickens.
     Traditionally the farms used windows to provide fresh air in the chicken houses. Farmers rarely
planted trees or tall crops around the buildings, so there would be no barrier to the airflow.
     But then in the 60s, farms began to use mechanical ventilation (通风) systems. Instead of windows,
the mechanical systems used tunnel fans to circulate (使…循环) air. The fans directed airflow from the
poultry houses toward the homes of neighbors.
     Researchers began dealing with the problem in 2000. They found that over a period of six years,
planting three rows of trees reduced total dust and ammonia by more than half. And they found that
smells were reduced by 18%.
     Farmers may think trees will take too long to grow and be effective. But some trees can grow quickly. At least one-third of the Delmarva farms have planted trees, technically known as vegetative
environmental buffers. The idea offers a way to cut pollution, save money and energy, and make the
neighbors happy.1. How did the mechanical ventilation system work?
_____________________________________________________
2. The number of chickens raised on the poultry farms in Delmarva is up to ____________________.
3. The benefits of planting trees around poultry farms are _________________.
4. What is the main topic of the passage?
_____________________________________________________
答案
1. By using tunnel fans to circulate air
2. 150 million
3. cutting pollution, saving money and energy, and make the neighbors happy
4. The benefits of planting trees around poultry farms
举一反三
阅读理解。     Imagine that the genome (基因组) 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, 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 centuries; if I wrote out the human genome, one letter per millimeter,
my text would be as long as the River Danube. This is a huge volume, a book of great length, but it all fits
inside an extremely small cell nuclear(细胞核) that fits easily upon the head of a pin.
     The idea of the genome as a book is not, strictly speaking, even a metaphor. 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 signs into a large dictionary of meanings through the order of their groupings. So is a genome. The only difference is that all English books read from left to right, while some parts of
the genome read from left to right while some from right to left, but never both at the same time.
     While English books are written in words of different lengthens using twenty-six letters, genomes are
written entirely in words of three-letter length, 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 condition it can both photocopy itself and read
itself.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 time.
D. From one direction at a time. 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 an alphabet of four letters 
D. is smart enough to read and take photos of itself3. It can be concluded that the passage is mainly written for ______.A. specialists in the field
B. general readers
C. natural scientists
D. readers with professional knowledge 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
题型:四川省月考题难度:| 查看答案
完形填空。     We have known for a long time that flowers of different plants open and close at different times of day.
This is so   1   that there seems to be no need to ask the reason for it. Yet no one    2   understands why
flowers open and close like this at particular times. The process is not as   3   as we might think, as recent
experiments have shown. In one study, flowers were kept in constant    4  . We might expect that the
flowers, without any information about the time of day, did not open as they   5   do. As a matter of fact,
they   6   to open at their usual time. This suggests that they have some mysterious(神秘的) way of
knowing the  7  . Their sense of time does not   8    information from the outside world; it is, so to speak,
inside them, a kind of "inner clock".
     This   9   may not seem to be very important. However, it was later found that not just plants but also 
  10   , including man, have this "inner clock" which   11   the working of their bodies and influences their
activities. Men, then, are also influenced by this mysterious  12  . Whether we wish it or not, it affects such
things in our life as our need for sleep, our need for food.
In the past, this did not really   13   because people lived in natural condition. In the   14   world, things
are different; now there are spacemen, airplane pilots and, in ordinary life, a lot of people who have to
work at night. It would be very  15  , then, to know more about the "inner clock". Such things as flowers
might help us understand more about ourselves.
题型:广东省期中题难度:| 查看答案
题型:广东省期中题难度:| 查看答案
(     )1. A. familiar  
(     )2. A. partly    
(     )3. A. complex  
(     )4. A. quietness
(     )5. A. finally  
(     )6. A. refused  
(     )7. A. time      
(     )8. A. deal with
(     )9. A. discovery
(     )10. A. beasts  
(     )11. A. controls
(     )12. A. world    
(     )13. A. happen  
(     )14. A. ancient  
(     )15. A. hard    
B. strange    
B. personally
B. simple    
B. darkness  
B. completely
B. decided    
B. secret    
B. add to    
B. activity  
B. animals    
B. studies    
B. flower    
B. exist      
B. modern    
B. expensive  
C. similar    
C. really      
C. mature      
C. loneliness  
C. physically  
C. continued  
C. process    
C. give away  
C. invention  
C. strangers  
C. measures    
C. powe        
C. matter      
C. wonderful  
C. convenient  
D. special    
D. willingly  
D. meaningful
D. sadness    
D. normally  
D. failed    
D. study      
D. depend on  
D. method    
D. humans    
D. destroys  
D. experiment
D. work      
D. peaceful  
D. important  
阅读理解。
     Since the 1970s, scientists have been searching for ways to link the brain with computers.
Brain-computer interface (界面) (BCI) technology could help people with disabilities send commands
to machines.
     Recently, two researchers, Jose Milan and Michele Tavella from the Federal Polytechnic school in
Lausanne, Switzerland, demonstrated(展示)a small robotic wheelchair directed by a person"s thoughts.
     In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand.
He could even talk as he watched the vehicle and guided it with his thoughts.
     "Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles
to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak
electrical signals from reaching the muscles," Tavella says.  "Our system allows disabled people to
communicate with external world and also to control devices."
     The researchers designed a special cap for the user. This head cover picks up the signals from the
scalp(头皮) and sends them to a computer. The computer interprets the signals and commands the
motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help
the computer react to commands from the brain.
     Prof. Milan, the team leader, says scientists keep improving the computer software that interprets
brain signals and turns them into simple commands. "The practical possibilities that BCI technology offers
to disabled people can be grouped in two categories: communication, and controlling devices. One
example is this wheelchair."
     He says his team has set two goals. One is testing with real patients, so as to prove that this is a
technology they can benefit from. And the other is to guarantee that they can use the technology over
long periods of time.
1. BCI is a technology that can ______.
A. help to update computer systems      
B. link the human brain with computers
C. help the disabled to recover                
D. control a person"s thoughts
2. How did Tavella operate the wheelchair in the laboratory?
A. By controlling his muscles.                
B. By talking to the machine.
C. By moving his hand.                       
D. By using his mind.
3. Which of the following shows the path of the signals described in Paragraph 5?
A. scalp→computer→cap→wheelchair
B. computer→cap→scalp→wheelchair
C. scalp→cap→computer→wheelchair
D. cap→computer→scalp→wheelchair
4. The team will test with real patients to _____.
A. make profits from them          
B. prove the technology useful to them
C. make them live longer            
D. learn about their physical condition
5. Which of the following would be the best title for the text?
A. Switzerland, the BCI Research Center
B. New Findings About How the Human Brain Works
C. BCI Could Mean More Freedom for the Disabled
D. Robotic Vehicles Could Help to Cure Brain Injuries
完形填空。
     It has been argued by some that gifted children should be grouped in special classes. The   1    is based
on the belief that in regular classes these children are held back in their intellectual (智力的) growth by   2    situations that are designed for the  3   children.
     There can be little doubt that  4   classes can help the gifted children to graduate earlier and take their
place in life sooner. However, to take these  5   out of the regular classes may create serious problems.
     I observed a number of  6   children who were taken out of a special class and placed in a   7    class.
In the special class, they showed little ability to use their own judgment, relying   8   on their teachers"
directions. In the regular class, having no worry about keeping up, they began to reflect  9   on many
problems, some of which were not on the school program.
     Many are concerned that gifted children become 10  and lose interest in learning. However, this  11 
 is more often from parents and teachers than from students, and some of these 12   simply conclude that
special classes should be set up for those who are  13  .Some top students do feel bored in class, but why
they  14   so goes far beyond the work they have in school. Studies have shown that to be bored is to be
anxious. The gifted child who is bored is an   15   child.
题型:广东省期中题难度:| 查看答案
题型:广东省期中题难度:| 查看答案
最新试题
热门考点

超级试练试题库

© 2017-2019 超级试练试题库,All Rights Reserved.

(     )1. A. principle  
(     )2. A. designing  
(     )3. A. smart      
(     )4. A. regular    
(     )5. A. children    
(     )6. A. intelligent
(     )7. A. separate    
(     )8. A. specially  
(     )9. A. directly    
(     )10. A. doubted    
(     )11. A. concern    
(     )12. A. students  
(     )13. A. talented  
(     )14. A. believe    
(     )15. A. outstanding
B. theory    
B. grouping  
B. curious    
B. special    
B. programs  
B. stupid    
B. regular    
B. slightly  
B. cleverly  
B. bored      
B. conclusion
B. adults    
B. worried    
B. think      
B. intelligent
C. argument  
C. learning  
C. little    
C. small      
C. graduates  
C. ordinary  
C. new        
C. wrongly    
C. voluntarily
C. worried    
C. reflection
C. scholars  
C. learned    
C. say        
C. anxious    
D. discussion  
D. living      
D. average      
D. creative    
D. designs      
D. independent  
D. boring      
D. heavily      
D. quickly      
D. tired        
D. interest    
D. teachers    
D. interested  
D. feel        
D. ordinary    
语文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。
      Most students do an IQ text early in their school career. Even if they never see their results, they feel
that their IQ is   1  determines how well they are going to do in life. When they see other students doing    2       (good) than them, they usually believe that those students have   3    higher IQ and   4    there
is nothing they can do to change facts. However, new research   5    EQ suggests that success is not
simply the result of a high IQ.
    While your IQ tells you how   6   (intelligence) you are, your EQ tells you how well you use your
intelligence. Professor Salovery,   7    invented the term EQ, gives the following description: At work, it
is IQ that   8    (get) you promoted. Supported by his academic research, Professor Salovery suggests
that when someone"s future success    9    (predict), their character,   10     measured by EQ tests, might
actually matter more than their IQ.