。

Passage One

Questions 26 to 29 are based on the passage you have just heard.

26. [A] The whole Antarctic region will be submerged.

[B] Some polar animals will soon become extinct.

[C] Many coastal cities will be covered with water.

[D] The earth will experience extreme weathers.

27. [A] How humans are to cope with global warming.

[B] How unstable the West Antarctic ice sheet is.

[C] How vulnerable the coastal cities are.

[D] How polar ice impacts global weather.

28. [A] It collapsed at least once in the past 1.3 million years.

[B] It sits firmly on solid rock at the bottom of the ocean.

[C] It melted at temperatures a bit higher than those of today.

[D] It will have little impact on sea level when it breaks up.

29. [A] The West Antarctic region was once an open ocean.

[B] The West Antarctic ice sheet was about 7,000 feet thick.

[C] The West Antarctic ice sheet was once floating ice.

[D] The West Antarctic region used to be warmer than today.

Passage Two

Questions 30 to 32 are based on the passage you have just heard.

30. [A] Whether we can develop social ties on the Internet.

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