课后练习：

1. When the United States was born, the continent of Antarctic was as remote as the moon, because the moon was clearly ____ and the very existence of Antarctic was uncertain.

A visit B viable C visible D variable

2. The pact arranging this is even being viewed as a model _____ the moon and other celestial bodies.

A application to B applied for C applies to D applicable to

3. The answer _____ a number of factors.

A lie in B laid out C lays in D lies in

4. Antarctic seems a vast basin of rock, ___ with a load of ice.

A filled and overflowed B filling and overflowing C full and overflowing D filled and overflowing

5. Antarctic is _____ to have mineral resources comparable to those of other great continents.

A bind B binding C bound D bounded

6. Several intercontinental air routes lie ____ portions of Antarctic.

A in B through C across D to

7.Any vehicle on a ______ in the southern half of the heavens remains continuously visible to an antenna at the pole.

A miss B mission C mistake D mixture

8. As to space research, there is no place on earth better suited ___ the South Pole for certain kinds of observation.

A than B to C for D as

9. On all these counts, the scientists ______ their voyages to Antarctic and the vast sums needed.

A just B justify C judge D justification

答案：1C 2D 3D 4D 5C 6C 7B 8A 9B

补充练习：

1．Yet many people, thinking of the distant continent only as a bleak, rocky, cold and ________land mass, may wonder: Why all the fuss? Why protect something so________?

A inhospitable, unpromising B hospitable, promising

2. Antarctica is a very large area of the earth's surface, but-until recent years- ________ studied.

A was the least B the least was

3. The Antarctica treaty applies to all areas (the high seas ________) below latitude 60 degrees south.

A expected B excepted C except