The passage implies that______.
A. Britain's House of Commons has 701 members
B. the Australian system works well in Australia
C. the U. S. system of government developed slowly
D. elections are more frequent in Australia than in England
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What is the main topic of the passage？
A. The great pressures of the Sun.
B. The high temperature of the Sun.
C. The structure of the Sun.
D. How the Sun evolved.
Australia is described as______in the passage.
A. much governed
B. populous
C. sparsely settled
D. politically unorganized
All of the following are parts of the Sun's atmosphere EXCEPT the______.
A. convection zone
B. chromosphere
C. corona
D. photosphere
There may be a solid core at the center of the Sun______.
A. because the pressures are great
B. for the temperature is not high enough
C. in spite of the great pressures
D. because of the high temperature
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