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

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问题     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 planet comes closer to the earth than Venus. At its nearest approach it is about 25,000,000 miles (40,2000,000 km. ) away.
    As seen from the earth, Venus is the first planet or star that can be seen in the western sky in the evening. At other times, it is the last planet or star that can be seen in the eastern sky in the morning. When Venus is near its brightest point, it can be seen in daylight. Early astronomers called the object that appeared in the evening Hesperus, and Phosphorus in the morning. Later, they realized these two objects were the same planet. They named it Venus in honor of the Roman goddess of love and beauty.  
Venus is called the earth’s "twin" because ______.

选项 A、it’s almost as big as the earth
B、it’s the nearest to the earth
C、Venus and the earth are both planets
D、they are of the same shape

答案A

解析 本题的依据句与前面一道题相同,都是文章的首句。其关键信息…the two planets are so like each other in size与A选项意思一致。
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