In the fourth paragraph, the author implies that imagination is most important to scientists when they________.
A.formulate possible solutions to a problem 
B. evaluate previous work on a problem
C.close an investigation  
D. gather known facts

A.capital
B.tradition
C.different
D.opera

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 difficult to _______ the exact meaning of an idiom in a foreign language.
A.exchange      
B.transfer 
C.convert
D.convey

………air is essential to man, so is water to fish.
A. As 
B.Just 
C.Since    
D. Like

The number of people who have been infected with the virus of bird flu is_______
A.60
B.2003
C.120
D.180

I wash / sheets / put them out to dry / it / be / nice sunny day/ there / be / breeze.
A.I have washed the sheets and put them out to dry because it was a nice sunny day and there was a breeze.
B.I washed the sheets and had put them out to dry because it was a nice sunny day and there was a breeze.
C.I washed the sheets and put them out to dry because it was a nice sunny day and there was a breeze.
D.I washed the sheets and put them out to dry because it have been a nice sunny day and there was a breeze.

When you go to the zoo, don’t _____ the animals.
A.do
B.watch                      
C.play                        
D.tease

Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.
There is growing concern about the way man has destroyed the environment.
A.ease
B.attraction
C.consideration
D.speculation

The sandwiches were too stale to eat.
A.The sandwiches were so stale in order to eat.
B.The sandwiches were very stale to be eaten.
C.The sandwiches weren’t fresh enough to eat.
D.The sandwiches weren’t enough fresh to eat.

Task 4. Read the following passages and mark the letter A, B, C or D to indicate the correct word for each of the blanks from 16 to 20.
Polar bears are in danger of dying  out.
 (16) ______some other endangered animals, it's not  hunters that are the problem, it's climate change. Since 1979, the ice cap at the Arctic Circle where the polar bears live has reduced in size by about 30 per cent. The temperature in the Arctic has slowly been rising and this  is (17)_________ the sea ice to melt, endangering the polar bears' home. The polar bears' main sources of food are the different types of seals found in the Arctic. They catch them by waiting next to the air   holes seals have made in the   ice. (18)___ the bears are very strong swimmers, they could never catch seals in water. This means that the bears really do rely on the ice to hunt. Polar bears also need sea ice to travel. They can cover a huge territory and often swim from one part of the ice to another. They have  been (19)___ to swim up to 100 km, but when there is less ice, they may have to swim further and this can (20)_________ fatal to the bears. A number of bears have drown in the last few years and scientists believe that it is because they were not able to reach more ice before they became too tired and couldn't swim any further.
(20)
A.end
B.come
C.prove
D.happen