托福閱讀模擬練習題及答案

時間：2020-12-22 14:46:29 考試英語我要投稿

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2016年托福閱讀模擬練習題及答案

　　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 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 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.

2016年托福閱讀模擬練習題及答案

　　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 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 wispy marks were 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 simple shapes. They have rim crests that are elevated above the surrounding terrain, smooth, bowl-shaped interiors, and depths that are about one-sixth their diameters. The complexity of shape increases for larger craters.

　　1. What does the passage mainly discuss?

　　(A) What astronomers learned from the Surveyor and Apollo space missions.

　　(B) Characteristics of the major terrains of the Moon.

　　(D) Techniques used to catalogue the Moon's land forms.

　　2. The word "undergone經(jīng)歷" in line 1 is closest in meaning to

　　(A) altered

　　(B) substituted

　　(D) preserved

　　3. According to the passage , the Maria differ from the Terrace mainly in terms of

　　(A) age

　　(B) manner of creation

　　(D) composition