题目内容

The effects of global warming are being most keenly felt in the ______________ region, compared with the regions in other latitudes.

Arctic
B. mid-latitude
C. subtropical
D. tropical

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The scientific evidence for the movie “The day after tomorrow” is based on___________________.

A. the rise of global sea level
B. the changes in the deep ocean circulation
C. the increase in ocean acidity
D. the increasing hurrican activities

The occurrence of sunspot varies in a/an ______________ cycle.

A. 9-year
B. 10-year
C. 11-year
D. annual

The standard period of “climate” is .

A. 3-7 days
B. one year
C. two years
D. 30 years

_______________________ is/are climate variation(s) in decadal/multi-decadal time scales.

A. ENSO
B. MJO
C. NAM
D. PDO
E. AMO
F. IOD
G. QBO
H. NAO

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