Passage 1
小说类：第一篇依然是小说，主要讲一个母亲带着孩子去看蝴蝶，通过亲近自然培养孩子的独立性 发现孩子对自然有着自己的感知力。
Passage 2
历史类：第二篇讲了二战后不同的经济财政政策及其影响，主要提到了世界银行和货币组织 在美国和英国起到的不同作用。
Passage 3
科学类：第三篇主要内容为科学家们对于从树叶中提取金子的实验数据众说纷纭，至今仍未定论。
Passage 4
社科类：第四篇讲历史人物 林肯(提到废除奴隶制的事迹影响)
Passage 5
科学类：第五篇主要内容为冰块移动引起的地质地貌变化，比如eruption等，及对全球环境的影响。
考到的词汇题：simple sport interests ease
篇段：
Gold in Trees May Hint at Buried Treasure
Money may not grow on trees, but gold does—or at least it accumulates inside of them. Scientists have found that trees growing over deeply buried deposits of gold ore sport leaves with higher-than-normal concentrations of the glittering element. The finding provides an inexpensive, excavation-free way to narrow the search for ore deposits.
Scientists have long had clues that trees and other vegetation pulled gold from the soil and transported it to their leaves, but the evidence wasn’t clear. The gold particles could have stuck to the leaves after being blown there as dust, for example. To bolster the case that the gold came from soil beneath the trees, researchers conducted a series of field studies and lab tests.
At one site in Western Australia, the scientists gathered leaves, twigs, and bark from eucalyptus trees growing above a known gold deposit. The deposit is about the size of a football field and lies 30 meters or more below ground, but at today’s gold prices it’s too small and sparse to be worth excavating. The team gathered the same parts from trees growing 200 meters away from the ore. Although background concentrations of gold in vegetation are typically less than 2 parts per billion (ppb), dried leaves from the trees growing above the ore deposit—but not those 200 meters away—had gold levels up to 80 ppb, says team member Mel Lintern, a geochemist at CSIRO’s Earth Science and Resource Engineering division in Kensington, Australia. (CSIRO, the Commonwealth Scientific and Industrial Research Organisation, is Australia’s national science agency.)
Likewise, field tests by Lintern’s group at a site in southern Australia showed that eucalyptus trees growing above a deposit lying 35 meters underground had 20 times more gold in the gummy substances coating their leaves than did trees that grew 800 meters away. Previous studies had noted anomalous concentrations of gold in the leaf-coating substances, Lintern says, but researchers couldn’t discount the possibility that the tiny particles of the metal had stuck to the leaves after being carried there by winds.
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