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

The protection of the Antarctic from ____________ exploitation is an important goal of environmentalists.

24. Antarctic __________ we know very little is covered with thick ice all the year round.

Accoding to passage 1, if a Chinese wants to visit Antarctic, the chinese had better choose to go in Autumn.

Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. Why should Australian formers keep an eye on the Antarctic ocean temperature A: It can help farmers reduce their economic loss. B: It allows for recovery of grassland lost to overgrazing. C: It can help to prevent animals from dying D: It enables astronauts to have a clear view of the Antarctic continent.

What is Larsen ice shelf A: The coldest part of Antarctica. B: The most fragile part of Antarctica. C: The closest part of Antarctica to Australia. D: The part of Antarctic where most scientists live.

To illustrate that time is relative, Einstein observed that to a person sitting on a hot stove, two minutes could feel like two hours. A: Scientists have observed a drop in ozone levels over Antarctic. B: Keynes observed that humans fall into two classes. C: So far the ceasefire has been observed by both sides.

Passage TwoQuestions 19 to 21 are based on the passage you have just heard. A: Penguins are the smallest animals in Antarctica. B: Penguins are the best-known of Antarctic birds. C: Penguins can fly because they have strong wings. D: Penguins can only swim a little distance.

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

Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. What factor drives Antarctic water to move beyond the continental shelf A: The increase of salt and density of the water B: The decrease of salt and density of the water C: The rising temperature due to global warming D: The melting of fresh ice into the ocean