The Arctic polar was crossed ______.
A: by ice
B: by water
C: by land
D: through the North-West Passage
A: by ice
B: by water
C: by land
D: through the North-West Passage
举一反三
- A) Arctic ice is a major source of the world's fresh water.[br][/br] B) The melting Arctic ice has drowned many coastal cities.[br][/br] C) The decline of Arctic ice is irreversible.[br][/br] D) Arctic ice is essential to human survival.
- The biggest difference of Arctic （北极）and Antarctic（南极） is A: The Arctic is the ocean surrounded by land, and the Antarctic is the land surrounded by ocean B: Arctic is bigger than Antarctic C: Arctic is warmer than Antarctic D: Upwelling is mostly at Arctic
- Of all the reserves of fresh water in the world, about three-fourths is ______. A: consumed by glaciers and polar ice B: in solid form C: out of the reach of present technology D: converted into sea water annually
- The North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. So scientists thought that______. A: most of the ice melted in the Northern hemisphere B: most of the ice melted in the Southern hemisphere C: The North Pole is colder than the South Pole D: The South Pole is colder than the North Pole
- According to the passage, what is believed to cause the thin<br/>lines seen on Europa’s surface? ___ A: A long period of extremely high tides B: Water breaking through from beneath the surface ice C: The continuous pressure of slush on top of the ice D: Heat generated by the hot rocky core