A, B, C or D . Q1. In paragraph B, the author intends to A. show Antarctica has been a central topic of global warming discussion in Mass media.
B. illustrate how its huge sea ice brings food to millions of lives in the world.
C. emphasise the significance of Antarctica to the global climate and ocean currents.
D. illustrate the geographical location of Antarctica as the central spot on Earth.
Q2. Why should Australian farmers 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.
Q3. 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.
Q4. 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
Q5. 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
