单项选择题

Antarctica is scientifically important in that ______.

A．it is a space station
B．it is an ideal place for the investigation of glaciology
C．there is the mysterious dry valley
D．it can help people detect global environmental changes

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单项选择题

Which of the following statements is true according to the article

A．There is a cluster of island west of the Transantartic Mountain.
B．Scientific research on Antarctica only centers on the ice and snow there.
C．Dry valleys may be a place to dispose of our pollutants.
D．All the countries on earth should be concerned about the health of the West Antarctic Ice Sheet.