单项选择题
| Questions 14 to 16 are based on a talk
on the world’s air pollution. You now have 15 seconds to read Questions 14 to
16. |
Due to human influences on climate, between 1990 and 2100, it is estimated that most probably average global temperatures will rise by between ______.
A．3. 1 and 8.9 degrees Celsius.
B．1.7 and 4. 9 degrees Celsius.
C．3.1 and 6. 9 degrees Fahrenheit.
D．1.3 and 4.9 degrees Celsius.