Which of the following is true about words?
A. They can not be used correctly by most people.
B. They are used to express feelings only.
C. They are simply sounds and can be written down.
D. They cannot be used to express thoughts.
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In the first paragraph "but most of it is university" , "it" refers to______.
A. the rest of the city
B. the town
C. the heart of Cambridge
D. the university
The real power of words exists in their______.
A. convenience
B. properties
C. invention
D. representative function
It is high time that you______the problem carefully about what you will do in the future.
A. are studied
B. must study
C. studied
D. study
There are no______medicines for Acquired Immune Deficiency Syndrome.
A. effect
B. effective
C. efficient
D. efficacy