A.habitat
B.antelope
C.sociable
D.gorilla

According to some experts, the exact number of home-schooled children then must be _______.
A.1,700,000 
B.1,900,000
C. 850,000
D.1,600,000

Some vegetables are grown without soil and artificial light.
A.real 
B.natural          
C. true 
D.genuine

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
You don't try to work hard.  You will fail in the exam.
A.Unless you try to work hard, you won't fail in the exam.
B.Unless do you try to work hard, you will fail in the exam.
C.Unless you try to work hard, you will fail in the exam.
D.Unless you don't try to work hard, you will fail in the exam.

She has lost her appetite recently.
A.She hasn’t had any food recently. 
B.Her appetite has been very good.
C.She has gone off food recently.  
D.She hasn’t eaten a lot of food recently.

Alcohol is a major cause of road traffic accidents in that ___.
A.more young men die in drink-related accidents than in any other way
B.most drivers who die in these accidents have been drinking
C.drinking affects people’s eyesight
D.one in three drivers drink heavily

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 35 to 42.
Nature has always provided a stimulus for inventive minds. Early flying machines clearly were an attempt to emulate the freedom of birds. Architects and engineers have often consciously modeled buildings on forms found in nature. A more recent example of the inspiration given by nature is the invention of Velcro®. The inventor of this now common fastening device noticed that small burrs attached to his dog's coat grasped the hairs by means of tiny hooks. This led him to invent a synthetic fabric whose surfaces mimic the clasping properties of this natural seedpod.
   Animals and plants have evolved solutions to the kinds of problems that often interest engineers and designers. Much current research in material science is concerned with actively examining the natural world, especially at the molecular level, for inspiration to develop materials with novel properties. This relatively new field of study is sometimes known as biomimetics, since it consciously attempts to mimic nature.
Researchers have investigated several interesting areas. For example, they have studied how the molecular structure of antler bone contributes to its amazing toughness, how the skin structure of a worm contributes to its ability to crawl, how the sea cucumber softens its skeleton and changes shape so that it can squeeze through tiny gaps in rocks, or what gives wood its high resistance to impact. These investigations have led to several breakthroughs in the development of composite materials with remarkable properties.
Predictions for future inventions that may be developed from these lines of research include so-called smart structures that design and repair themselves in a similar way to a variety of processes in the natural world. For example, engineers have envisaged bridges that would detect areas heavily stressed by vehicle movement or wind. The bridge structure would then automatically add or move material to the weak areas until the stress is reduced. The same principle might be used to repair damaged buildings. Other new materials that have been imagined are substances that would copy photosynthesis in green plants in order to create new energy sources. The potential impact of biomimetic research is so great that the twenty-first century may come to be known as the "Age of Materials."
As inferred from the passage, what would be the advantage of a product that mimics photosynthesis?
 
A.It could be used to create green plants.       
B.It could help to meet future energy needs.
C.It could be an aid in repairing green areas.   
D.It could form the basis of twenty-first century materials.

A.girl
B.man
C.lady
D.child

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.solidarity       
B.effectively 
C.documentary  
D.dedication

Read the following passage  and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for  the question  from 51 to 60.
Charles Lindbergh was born in Detroit, Michigan, in 1902 but was raised on a farm in Minnesota, where his father was elected to the U.S. Congress in 1907. From then on, he spent his boyhood alternately in Washington, D.C. Detroit, and Little Falls, Minnesota. Because Lindbergh exhibited exceptional mechanical talent, in 1921 he was admitted to the University of Wisconsing to study engineering. However, the young man was seeking more challenging endeavors, and two years later he became a stunt pilot who performed feats at county fairs and public assemblies. This unusual and dangerous undertaking paid off handsomely in the sense that it allowed him to gain a diverse and well-rounded experience in aeronautics. He particularly delighted in what he called “wing-walking” and parachute jumping.
          After a year of training as a military cadet, Lindbergh completed his program at the Brooks and Kelly airfieds at the top of his class and earned the rank of captain. Robertson Aircraft Corporation of St. Louis, Missouri, offered him employment as a mail pilot to run the routes between St. Louis and Chicago, and Lindbergh retained his positon with the company until 1927. During this period, he set out to win the Raymond B. Orteig prize of $25,000 to be awarded to the first pilot to fly nonstop from New York to Paris. This ambition would irreversibly change his life and accord him a prominent place in the history of aviation.
          Embarking on the greatest adventure of his time, Lindbergh left Roosevelt Field at 7:52 A.M. on May 20, 1927, and landed at Le Bourget Field at 5:24 P.M. the next day. Fearing that he would be unknown when he arrived, Lindbergh carried letters of introduction to dignitaries in Paris, but when his plane came to a stop, he was overwhelmed by tremendous welcoming crowds. He was decorated in France, Great Britain, and Belgium, and President Coolidge sent a specially designated cruiser, the Memphis, to bring him back, His accomplishments in aeronautics brought him more medals and awards than had ever been received by any other person in private life.
The word “irreversibly” is closest in meaning to
A.forever
B.formerly      
C. irresistibly
D.only