[填空题]Antarctica is for the most part a vast, icy emptiness, some 14 million square kilometers of which is almost completely covered by an ice sheet with an average thickness of over 2, 000 meters.
Only about 2% of the land mass is ice-free, and about half of this is in the Ross Dependency comprised of land, ice, shelf and islands between 160 degrees east and 15 degrees west.
The largest single ice-free area lies in South Victoria Land, about 100 kilometers from New Zealand’s scientific research station, Scott Base on Ross Island.
The United States also has a large base at South Pole, known as the Amundsen-Scott Base and named after two of the most important early 20th century explorers who helped bring world attention to the continent.
Only a very small proportion of the Coast is easily accessible, mostly along the coast of Victoria Land and Ross Island.
The Frozen Con
[单项选择]
We know that, for the most part, the
bigger a man’s muscles are, the stronger he is. Can it be considered, then, that
the larger the brain a man has, the cleverer he is The answer is no.
There are only two animals that have larger brains than man, the whale and
the elephant. Yet, according to his size, man’s brain is larger. Man’s brain
usually weighs about three pounds or a little more, and this is about
one-fortieth of the weight of his whole body. The whale’s body, on the other
hand, is a thousand times heavier than its brain, while the elephant’s body is
about five hundred times as heavy.
But a man who has a large
brain is not necessarily cleverer than one whose brain is smaller. We know that
geniuses have existed who have had very large brains, but there have been others
whose brains were rather small.
We do not understand w
A. It is known to all that
B. Of course
C. We can not think that
D. Not
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