GMAT考试 7月10日更新GMAT阅读机经（二）.

　　GMAT考试已于7月10日正式更换题库了。以下是2012年7月的GMAT阅读机经更新，更新日期从7月11日起，澳际留学小编将为您提供最快，最新的GMAT阅读机经。澳际留学祝大家GMAT考试顺利!更多相关问题可咨询澳际留学在线专家，如果有任何意见和建议，也请联系我们。

3、经济理论(虚拟经济与实体经济)

　　关于经济理论的，实体经济和虚拟经济的关系。 有问题问的是 按凯恩斯 理论会怎么样 (by LifeCreator V40)

　　4、agricultural labor force

　　二战后 African American 成了主要的agricultural labor force。 讲了一种方式，使这些slave的工资高了，还分给他们土地什么的，但是另一方面，因为他们要把生产的东西交给地主，种的东西也是根据地主的需求来的，导致棉花多，价格下降什么的。。。。。。 (by小舞鞋lucia)

　　P1 二战后美国黑人农民地位上升，劳动力有议价能力，landlord 通过增加compensation 方式补偿他们，而不是像之前一样low pay

　　P2 其实现实并非如此，由于barter transaction 的存在，农民需要collateral 他们的农产品来获得资源，因此他们只能种农作物A，这样他们的经济利润就减少了 (by charleschoi)

　　黑人奴隶在内战后解放了，条件比以前好了，但是好像没有土地神马的，所以土地上中啥，好像还是奴隶主决定，然后第二段是什么种植棉花之类的，棉花种的多了，价格下降了之类，这是我理解的了 (by lzh416)

　　内战解放后黑人获得了(自由)，由此带来了南方劳动力紧缺__此处有题，问南方为什么劳动力紧缺，我选的是黑人以前把大量时间给了劳动__题也大意如此，专家认为这是黑人的机会，因为随之黑人重新进入劳动市场，可以和土地拥有者又更大的协商权，在低工资和恶劣工况方面。(此处也有题)

　　但事实并非如此，黑人需要向creditor借款安装灌溉还是什么项目作为启动，而由于借了钱他们又要接受creditor的要求让种啥种啥，结果导致他们又重新种棉花，市场需求下降，棉花过剩，隐藏含义是黑人并未得到改善。(此处有题)

　　(by yuanyuanblue)

　　5、测量误差

　　chinese team 重新测量mountain Everest 的高度，因为British 的测量存在一些错误，chinese用了一些新的方法来减小误差 (by小舞鞋lucia)

　　考古(感谢树姑娘和mometo和godss1985)

　　原文已确定!

　　原文如下：

　　GWD26-Q32 to 35

　　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 forts to correct for the errors that had plagued the British. One source of error is rraction, 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 rraction 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 rraction 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 rlector visible through a theodolite for ten miles, as a rerence 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.

　　Q32:

　　It can be inferred from the passage that rraction would be most likely to cause errors in measurements of a mountain’s elevation under which of the following conditions?

　　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.

　　Q33: Which of the following best describes the purpose of the sentence in lines 23-25 (“The Chinese…the British”)?

　　A. Introduce a dinition

　　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.

　　Q34: Which of the following is NOT mentioned as a possible source of error in surveying mountain elevation?

　　A. Mirages

　　B. Rraction

　　C. Inaccurate instruments

　　D. Variations in sea level

　　E. Uncertainty about the exact point to be measured

　　Q35:

　　The primary purpose of the passage is to

　　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

　　相关链接：

1.GMAT阅读相关文章及问题（十一）

2.GMAT考试 7月10日更新GMAT阅读机经（一）

3.740分GMAT备战心得：GMAT阅读