单项选择题

What has the NASA report revealed

A．The global warming is slowing down.
B．The world's climate is changing dramatically.
C．The ice around the arctic is disappearing very quickly.
D．A big storm has been formed around the arcti

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单项选择题

Which of the following statements is NOT true

A．Floating ice makes it difficult for polar bears to hunt seals.
B．Arctic sea ice melts at a rate of 8%.
C．Sea ice decreases to the lowest height in September.
D．The sea ice this year is 500,000 square miles less than in the 1970s.

单项选择题

Who is Francisco Paz

A．President of Venezuela's National Aviation Institute
B．President of Venezuela
C．Venezuela's Transportation Minister
D．Venezuela's Interior Minister