Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks.
Global warming is the current increase in temperature of the Earth’s surface (both land and water) as well as its atmosphere. Average temperature around the world have risen by  0.75°C (1.4°F) (36)            the last 100 years. About two thirds of this increase has occured since 1975 in the past, when the Earth experienced increases in temperature it was the result of natural causes, but today it is being caused by accumulation of greenhouse  gases in                                                      the  atmosphere      produced         by        human (37)                  .
The natural greenhouse effect maintains the Earth’s temperature at a safe level making it (38)                  for humans and many other life forms to exist. However, since The Industrial Revolution what benefits human has significantly enhanced the greenhouse effect (39)                        the Earth’s average temperature to rise by almost 1°C. This is creating the global warming (40)         we see today.
(36)
A.of                            
B.over                                    
C.with
D.by

Read the following passage and  mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions .
     
      An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established inEngland in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled - a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of the health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions.
      Many of the more important air pollutants, such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentration of these pollutants was altered by various chemical reactions; they became components in biogeochemical cycles. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil. On a global basis, nature's output of these compounds dwarfs that resulting from human activities.
      However, human production usually occurs in a localized area, such as a city. In such a region, human output may be dominant and may temporarily overload the natural purification scheme of the cycles. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact, the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, has a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.
 
The word "localized" in the third paragraph is closest in meaning to _______.
A.circled  
B.encircled
C.surrounded 
D.specified

I deeply regret __________ to her so severely last night. She was badly hurt.
A.to speak
B.to be speaking
C.being spoken
D.having spoken

Choose the best option A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of the main stress in each of the following questions.

A.forget 
B.offer       
C.relate
D.impress

Exercise 2. Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 6 to 10.
You will make the interview process easier for the employer if you volunteer relevant information about yourself. Think about how you want to present your (6)_______, experiences, education, work style, skills, and goals. Be prepared to supplement all your answers with examples that support the statements you make. It is also a good idea to review your résumé with a critical eye and identify areas that an employer might see as limitations or want further information. Think about how you can answer difficult questions (7)_______ and positively, while keeping each answer brief.
An interview gives the employer a (8)_______ to get to know you. While you do want to market yourself to the employer, answer each question with an honest response.
Never say anything negative about past experiences, employers, or courses and professors. Always think of something positive about an experience and talk about that. You should also be (9)_______. If you are genuinely interested in the job, let the interviewer know that.
One of the best ways to show you are interested in a job is to demonstrate that you have researched the organization prior to the interview. You can also (10)_______ interest by asking questions about the job, the organization, and its services and products.
(9)
A.enthusiasm              
B.enthusiastic             
C.enthusiast                
D.enthusiastically

Air ...................  is a cause of ill-health in human being.
A.dirty
B.pollution
C.contaminated
D.poison

l / be / glad / receive / letter.
A.I am glad to receive your letter.
B.I am glad when receive your letter.
C.I am glad to receiving your letter.
D.I has been glad receive your letter.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
How to protect children Web fans from unsuitable material online while encouraging them to use the Internet has long been discussed in the US.
For some parents, the Internet can seem like a jungle, filled with danger for their children. But jungles contain wonders as well as hazard and with good guides, some education, and a few precautions, the wilds of the Internet can be safely navigated. “Kids have to be online. If we tell our kids they can’t be allowed to surf the Internet, we’re cutting them off from their future,” said an expert. Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way would be to use what is known as a “content screener”. But this can’t be wholly reliable, and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet. Another way is that mum or dad is nearby when the child is surfing the Internet. A few other tips as follows:
- Don’t put the PC in a child’s room but keep it in an area where mum or dad can keep an eye on things. That also makes the Internet more of a family activity.
- Ask your child what he or she has been doing and about any friends they make online.
- Tell your child not to give online strangers personal information, especially like address and phone number. And tell your children never to talk to anyone they meet on line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.
According to the passage, we can infer that                                 .
A.Internet is a jungle full of danger       
B.a child who is on-line is in danger
C.Internet contains a lot of harmful sites        
D.soft wares fit for children want programming

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It is very important for a firm or a company to keep ______ the changes in the market.
A.pace of
B.track about
C.touch with
D.up with

We should avoid __________our environment.
 
A.to pollute   
B.polluting                     
C.polluted                     
D.being polluted