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【单选题】Venus (金星) is known as the earth’s "twin" because the two planets are so like each other in size. The diameter of Venus is about 7, 520 miles (12,100 km. ), smaller than that of the earth. No other pl...
A.
The Size of Venus
B.
Venus and the Earth
C.
Venus—the Earth’s "Twin"
D.
The Nearest Neighbor