题目内容

7.听第10段材料,回答第17至第20题.
17.What did China's meterological authority(气象局) admit?
A.Its failure in forecasting
B.Its accourate forecasting 
C.Its scientific and technological levels
18.What requires more indicators?
A.Forecasting short-term weather conditions 
B.Predicting the climate 
C.Both A and B
19.When did China's meteorological authority do a very good job?
 A.In 1989      B.In 1998      C.1999
20.What do we know about the ongoing drought?
A.It happens often in China.
B.It has remained since last October.
C.It's the worst in a century.

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