31. A. However B. Although C. Therefore D. Because
32. A. gets B. does C. makes D. causes
33. A. dead B. powerful C. poisonous D. harmless
34. A. when B. which C. where D. who
35. A. flood B. storm C. earthquake D. volcano
36. What does the passage primarily discuss?
A. Advantages and disadvantages of solar energy.
B. Solar energy’s advantages over other sources of energy.
C. The cost of solar energy.
D. Solar energy as an alternative for fossil fuels.
37. What does the word they in line 4 refer to?
A. solar energy users.
B. other renewable resources.
C. advantages.
D. solar cells.
38. Which of the following is NOT a traditional source of energy?
A. solar energy
B. oil
C. coal
D. gas 3
9. Which of the following is the main disadvantage of solar energy mentioned in the passage?
A. It is expensive.
B. Solar cells require large areas to operate.
C. It is unfriendly to the environment.
D. It depends on sunlight.
40.What does the word advantages in line 12 mean ?
A. very bad.
B. resources
C. benefits
D. friendly