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.
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.
举一反三
- 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
- Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. What is the final effect of the katabatic winds A: Increasing the moving speed of ocean current B: Increasing the salt level near ocean surface C: Bringing fresh ice into the oceans D: Piling up the mountainous ice cap respected by mariners
- Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. The decrease in the number of whales and seabirds is due to A: killer whales’ activity around Antarctica. B: the correlation between sea birds’ migration and the salinity level of the ocean. C: the lower productivity of food source resulting from less sea ice. D: the failure of seals to produce babies.
- Choose the correct letter from A-D and write it in boxes on your Answer Sheet. The main aim of the writer is to A: point out the economic benefits of tourism. B: outline the impact of tourism on the environment. C: introduce the concept of eco-tourism. D: explain the origins of eco-tourism.
- Choose the correct letter from A-D and write it in boxes on your Answer Sheet. The eco-tourist A: is often a victim of false advertising by unethical tour operators. B: accepts the restrictions that are placed on natural habitats. C: can unintentionally contribute to the negative effects of tourism. D: never goes to larger-scale tourist resorts.