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

<上一题目录下一题>

热门试题

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.

单项选择题

The word spotted(2nd paragraph)can best be relaced by ______.

A．placed
B．noticed
C．fixed
D．judged