GRE考试经典考前必读阅读试题5

阅读一直是考试的难点，也是很多同学的痛点，想要提高阅读分数，我们就要在备考期间做大量的复习，做到孰能生巧之后才能更好的掌握知识点，今天小编就为大家更新了阅读试题，在坦途网GMAT考试频道还有更多内容和GMAT考试时间，现在我们就先看看这篇吧！

In 1975 Chinese survey teams remeasured Mount Everest, the highest of the Himalayan mountains. Like the British in 1852, they used the age-old technique of ―carrying in‖ sea level: surveyors marched inland from the coast for thousands of miles, stopping at increments of as little as a few feet to measure their elevation, and marking each increment with two poles. To measure the difference in elevation between poles, surveyors used an optical level—a telescope on a level base—placed halfway between the poles. They sighted each pole, reading off measurements that were then used to calculate the change in elevation over each increment. In sight of the peaks the used theodolites telescopes for measuring vertical and horizontal angles—to determine the elevation of the summit.

The Chinese, however, made efforts to correct for the errors that had plagued the British. One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure. Because light traveling down from a summit passes through many such layers, a surveyor could sight a mirage rather than the peak itself. To reduce refraction errors, the Chinese team carried in sea level to within five to twelve miles of Everest’s summit, decreasing the amount of air that light passed through on its way to their theodolites. The Chinese also launched weather balloons near their theodolites to measure atmospheric temperature and pressure changes to better estimate refraction errors. Another hurdle is the peak’s shape. When surveyors sight the summit, there is a risk they might not all measure the same point. In 1975 the Chinese installed the first survey beacon on Everest, a red reflector visible through a theodolite for ten miles, as a reference point. One more source of error is the unevenness of sea level. The British assumed that carrying in sea level would extend an imaginary line from the shore along Earth’s curve to a point beneath the Himalaya. In reality, sea level varies according to the irregular interior of the planet. The Chinese used a gravity meter to correct for local deviations in sea level.

32. It can be inferred from the passage that refraction would be most likely to cause errors in measurements of a mountain’s elevation under which of the following conditions? (信息题) A. When there are local variations in sea level B. When light passes through humid air

C. When theodolites are used relatively far from the mountain peak. D. When weather balloons indicate low air temperature and pressure.

E. When sea level has been carried in to within five to twelve miles of the summit.

33. Which of the following best describes the purpose of the sentence in lines 23-25 (―The Chinese…the British‖)? (举例题)

A. Introduce a definition

B. Signal a transition in focus

C. Summarize the preceding paragraph

D. Draw a contrast between two different theories.

E. Present information that contradicts the preceding paragraph.

34. Which of the following is NOT mentioned as a possible source of error in surveying mountain elevation? (列举题)

A. Mirages B. Refraction

C. Inaccurate instruments D. Variations in sea level

E. Uncertainty about the exact point to be measured

35. The primary purpose of the passage is to (写法性主题题) A. provide details about improvements to a process B. challenge the assumptions underlying a new method C. criticize the way in which a failed project was carried out D. call for new methods to solve an existing problem E. explain the theory behind a new technique

今天的阅读试题小编就给大家介绍到这里了，看完这篇文章是不是会发现自己的不足之处呢？做模拟试题就是这么一个过程，不断发现自己的不不足，不断的改变完善自己，小编会持续给大家更新最新资讯和考试内容，想要有更多了解的就到坦途网来找小编吧！相信小编会给大家一个满意的答复！希望在2019年的GMAT考试中大家能去的优异的成绩！