GRE之OG2阅读真题精选整合
在备考GRE阅读的过程中，练真题是必不行少的流程，我就和大家共享，来观赏一下吧。
GRE阅读真题之OG2 Passage 21
OG-2
Passage 21
Even after numerous products made with artificial sweeteners became available, sugar consumption per capita continued to ri. Now manufacturers are introducing fat-free versions of various foods that they claim have the taste and texture of the traditional high-fat versions. Even if the manufacturers’ claim is true, given that the availability of sugar-free foods did not reduce sugar consumption, it is unlikely that the availability of the fat-free foods will reduce fat consumption.
1. Which of the following, if true, most riously undermines the argument?
蜀葵的种植方法
清代禁毁书目
A. Several kinds of fat substitute are available to manufacturers, each of which gives a noticeably different taste and texture to products that contain it.
B. The products made with artificial sweeteners did not taste like products made with sugar.
传输文件
C. The foods brought out in sugar-free versions did not generally have reduced levels of fat, but many of the fat-free versions about to be introduced are low in sugar.
D. People who regularly consume products containing artificial sweeteners are more likely than others to consume fat-free foods.
E. Not all foods containing fat can be produced in fat-free versions.
GRE阅读真题之OG2 Passage 22
OG-2
现代诗歌精选300首 Passage 22
Recent studies of diment in the North Atlantic’s deep waters reveal possible cyclical patterns in the history of Earth’s climate. The rock fragments in the diments are too large to have been transported there by ocean currents; they must have reached their prent locations by traveling in large icebergs that floated long distances from their point of origin before melting. Geologist Gerard
Bond noticed that some of the diment grains were stained with iron oxide, evidence that they originated in locales where glaciers had overrun outcrops of red sandstone. Bond’s detailed analysis of deep-water diment cores showed changes in the mix of diment sources over time: the proportion of the red-stained grains fluctuated back and forth from lows of 5 percent to highs of about 17 percent, and the fluctuations occurred in a nearly regular 1,500-year cycle.
Bond hypothesized that the alternating cycles might be evidence of changes in ocean-water circulation and therefore in Earth’s climate. He knew that the sources of the red-stained grains were generally clor to the North Pole than were the places yielding a hig
h proportion of “clean” grains. At certain times, apparently, more icebergs from the Arctic Ocean in the far north were traveling south well into the North Atlantic before melting and shedding their diment. 鸟图片简笔画
excel减法
Ocean waters are constantly moving, and water temperature is both a cau and an effect of this movement. As water cools, it becomes denr and sinks to the ocean’s bottom. During some periods, the bottom layer of the world’s oceans comes from cold, den water sinking in the far North Atlantic. This caus the warm surface waters of the Gulf Stream to be pulled northward. Bond realized that during such periods, the influx of the warm surface waters into northern regions could cau a large proportion of the icebergs that bear red grains to melt before traveling very far into the North Atlantic. But sometimes the ocean’s dynamic changes, and waters from the Gulf Stream do not travel northward in this way. During the periods, surface waters in the North Atlantic would generally be colder, permitting icebergs bearing red-stained grains to travel farther south in the North Atlantic before melting and depositing their diment.
The ont of the so-called Little Ice Age (1300-1860), which followed the Medieval Warm Period of the eighth through tenth centuries, may reprent the most recent time that the ocean’s dynamic changed in this way. If ongoing climate-history studies support Bond’s hypothesis of 1,500-year cycles, scientists may establish a major natural rhythm in Earth’s temperatures that could then be extrapolated into the future. Becau the midpoint of the Medieval Warm Period was about A.D. 850, an extension of Bond’s cycles would place the midpoint of the next warm interval in the twenty-fourth century.
1. According to the passage, which of the following is true of the rock fragments contained in the diments studied by Bond?
态度决定命运
A. The majority of them are compod of red sandstone.
线上英语课程 B. They must have reached their prent location over 1,500 years ago.
