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 from 43 to 50.
Humans are bringing about another global-scale change in the atmosphere: the increase in what are called greenhouse gases. Like glass in a greenhouse, these gases admit the Sun's light but tend to reflect back downward the heat that is radiated from the ground below, trapping heat in the Earth's atmosphere. This process is known as the greenhouse effect. Carbon dioxide is the most significant of these gases – there is 25 percent more carbon dioxide in the atmosphere today than there was a century ago, the result of our burning coal and fuels derived from oil. Methane, nitrous oxide, and CFCs are greenhouse gases as well.
Scientists predict that increases in these gases in the atmosphere will make the Earth a warmer place. They expect a global rise in average temperature somewhere between 1.0 and 3.5 degrees Celsius in the next century. Average temperatures have in fact been rising and the years from 1987 to 1997 were the warmest years on record. Some scientists are reluctant to say that global warming has actually begun because climate naturally varies from year to year and decade to decade, and it takes many years of records to be sure of a fundamental change. There is little disagreement, though, that global warming is looming.
Global warming will have different effects in different regions. A warmed world is expected to have more extreme weather, with more rain during wet periods, longer droughts, and more powerful storms. Although the effects of future climate changes are unknown, some predict that exaggerated weather conditions may translate into better agricultural yields in areas such as the western United States, where temperature and rainfall are expected to increase, while dramatic decreases in rainfall may lead to severe droughts and plunging agricultural yields in parts of Africa, for example.
Warmer temperatures are expected to partially melt the polar ice caps, leading to a projected sea level rise of 50 centimeters by the year 2050. A sea level rise of this magnitude would flood coastal cities, force people to abandon low-lying islands, and completely inundate coastal wetlands. Diseases like malaria, which at present are primarily found in the tropics, may become more common in the regions of the globe between the tropics and the polar regions, called the temperate zones. For many of the world's plant species, and for animal species that are not easily able to shift their territories as their habitat grows warmer, climate change may bring extinction.
(Source: Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation)
According to paragraph 1, which of the following factors causes an increase in greenhouse gases?
A.Humans 
B.Glass in a greenhouse
C.Carbon dioxide
D.Solar radiation

The factory in______ John works is the biggest in the town.
A.where
B.which
C.that
D.when

A.amuses
B.purses
C.blouses  
D.pleases

II. Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word(s) for each of the blanks.
            Whenever there is a party, most girls get really excited about it so you can imagine how much fuss is (4) _______ about a sweet sixteen party. Many girls spend most of their senior year of junior high school (5) ________ about their parties – what theme to have, where to hold it and, of course, what to wear!
            How big the party is (6) ­­________ mostly on the budget of the parents. Some parties are very formal. They take place at a hotel with a band, rich food, a photographer, flower arrangements and much more. Other kinds of sweet sixteen parties are more casual. Some girls have a barbecue or even a beach party. Others decide (7) ________ dinner and a trip to the theatre in a limousine. (8) ________ they choose to celebrate, everyone wants to remember their sweet sixteen as a very special day in their life.
(5)
A.talked
B.talking
C.talk
D.to talk

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

A.employ                   
B.immune                   
C.powder                   
D.evoke

I couldn't believe that they were brothers. They were as different as __________.    
A.Mars from Jupiter   
B. chalk from cheese
C.salt and sugar 
D.milk from honey

__________(30)
A.solving
B.dealing
C.doing
D.making

Supply the correct form of the verbs in the brackets
Hurry up or you ( be).......... late for class.
A.would be
B.will be
C.would have been
D.are

_______(5)
A.force
B.make
C.cause
D.have

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
To absorb a younger workforce, many companies offered retirement plans as incentives for older workers to retire and make way for the young ones who earned lower salary.
A.rewards                   
B.opportunities           
C.motives                   
D.encouragements