Questions 7 to 10 are based on the following passage. At the end of the passage，you will be given 20 seconds to answer the questions.
Now, listen to the passage.
7. Besides experts' weather forecast, you can predict the weather by _____.
A. precise instrument
B. your own sense
C. compute
D. magic
8. When a storm is blowing, what will happen?
A. The air will be still.
B. The air will be full of dust.
C. Faraway objects may look vague.
D. The pressure will drop
9. Your sense of smell can also help you detect weather changes because_____.
A. before raining, odors become stronger
B. when raining, odors are repressed
C. odors are released on sunny days
D. odors become stronger on sunny days
10. When humidity rises，which of the following statements is CORRECT?
A. The pressure goes up.
B. Good weather is on the way.
C. Old people feel pains in their bones or joints.
D. Young people feel pains in their bones or joints.
