四六级考试

【单选题】 According to the passage, the maria differ from the terrace mainly in terms of ______.
A．age
B．manner of creation
C．size
D．composition

网考网参考答案：D
网考网解析：
细节理解题。由文章第一段前三句“... The contrast in the reflectivity (the capability of reflecting light) of these two terrains suggested to many early observers that the two terrains might have different compositions，and this supposition was confirmed by missions to the Moon such as Surveyor and Apollo．”可知，作为月球地形的两大组成成分，它们不同的反光率说明了它们具有不同的构成成分。因此， D选项为正确答案。 查看试题解析出处>>