What can be inferred from the passage about the Jovian planets?
A. Some of the Jovian planets may have conditions that could support life.
B. Jupiter is classified as one of the Jovian planets.
C. Europa is the largest of the moons that revolve around Jupiter.
D. The orbits of the Jovian planets have changed over time.
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The word actually in the passage is closest in meaning to
A. frequently
B. initially
C. really
D. usually
【C6】
A. compassion
B. opposition
C. criticism
D. assault
Compared with Booker T. Washington, Du Bois's stance was
A. less popular.
B. more radical.
C. less aggressive.
D. more conservative.
Why does the author mention the meteorite ALH84001 in paragraph 6?
A. Because it was found in Antarctica about fifty years ago
Because it was evidence of a recent impact on Mars
C. Because scientists thought that it contained evidence of life on Mars
D. Because the meteorite probably came from Mars a long time ago