这种定义题还要贴出来, 实在是.....
47. All of the following terms are defined in the passage EXCEPT
(A) Moon (line1)
(B) reflectivity(line3)
(C) regolith(line16)
(D) rays(line19)
定义的单词部分我在文章用黄色标出.
Question 41-50
The Moon, which has undergone a distinct and complex geological history, presents a striking appearance. The moon may be divided into two major terrains: the maria (dark lowlands) and the terrace( bright highlands). The contrast in the reflectivity (the capability of reflecting light ) of these two terrains suggested to many early observers that the two
(5) terrains might have different compositions, and this supposition was confirmed by missions to the Moon such as Surveyor and Apollo. One of the most obvious differences between the terrains is the smoothness of the maria in contrast to the roughness of the highlands. This roughness is mostly caused by the abundance of craters; the highlands are completely covered by large craters( greater than 40-50 km in diameter), while the craters
(10) of the maria tend to be much smaller. It is now known that the vast majority of the Moon’s craters were formed by the impact of solid bodies with the lunar surface.
Most of the near side of the Moon was thoroughly mapped and studied from telescopic pictures years before the age of space exploration. Earth-based telescopes can resolve objects as small as a few hundred meters on the lunar surface. Close observation of
(15) craters, combined with the way the Moon diffusely reflects sunlight, led to the understanding that the Moon is covered by a surface layer, or regolith, that overlies the solid rock of the Moon. Telescopic images permitted the cataloging of a bewildering array of land forms. Craters were studied for clues to their origin; the large circular maria were
(20) seen. Strange, sinuous features were observed in the maria. Although various land forms were catalogued, the majority of astronomers’ attention was fixed on craters and their
origins. Astronomers have known for a fairly long time that the shape of craters changes as they increase in size. Small craters with diameters of less than 10-15 km have relatively
(25) simple shapes. They have rim crests that are elevated above the surrounding terrain, smooth, bowl-shaped interiors, and depths that are about one-fifth to one-sixth their diameters. The complexity of shape increases for larger craters.
答案是C. 我的问题是: 怎么也看不出是怎么定义moon 的.
The Moon, which has undergone a distinct and complex eological
history, presents a striking appearance. 这个不算定义吧. 就算把下面一句" The moon may be divided into two major terrains: the maria (dark lowlands) and the terrace( bright highlands). " 扯上也说不过去.
相比而言, regolith(line16) 也好像没有解释. that 从严格意义上来说, 是修饰layer 的. 但如果从整个该句the Moon is covered by a surface layer, or regolith, that overlies the
solid rock of the Moon. 我认为regolith 可以勉强理解为: a surface layer that overlies the solid rock of the Moon. 想不通答案为什么选C
BTW, 我没在line 19 里面找到 rays, 估计文章不全.
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发表于 2004-7-13 12:42:00
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