C. the natural level is also known
D. it can be calculated quickly
Question 28. Which of the following is best supported by the passage?
A. To effectively control pollution, local government should regularly review their air pollution
laws.
B. One of the most important steps in preserving natural lands is to better enforce air pollution
laws.
C. Scientists should be consulted in order to establish uniform limits for all air pollutants.
D. Human activities have been effective in reducing air pollution.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each ofthe following questions. Question 29. The woman _______ someone had stolen her purse, but although they searched
everyone in the shop, it wasn't found.
A. accused
B. enforced
C. claimed
D. warned
Question 30. As I was _______ of the change in the program, I arrived half an hour late for the
rehearsal.
A. unaware
B. unconscious
C. unable
D. unreasonable
Question 31. The Best Invention _______ this year was given to Jason Meyers.
A. Reward
B. Brand
C. Factor
D. Award
Question 32. On Christmas Eve, the _______ family gathers for dinner, usually at my
grandmother's house.
167
A. mere
B. entire
C. total
D. complete
Question 33. When the first Chinese restaurants opened in Greece, it was very difficult to get fresh
_______ of Chinese vegetables.
A. provisions
B. materials
C. supplies
