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  3. 　　We cannot see it, we barely understand it, yet we know it exists because of the powerful influence it exerts on space. Dark ma

　　We cannot see it, we barely understand it, yet we know it exists because of the powerful influence it exerts on space. Dark ma

admin2022-02-15  1
问题 　　We cannot see it, we barely understand it, yet we know it exists because of the powerful influence it exerts on space. Dark matter makes up about 27% of the universe, and its gravitational force is enough to mesh entire galaxies together in a structure known as the cosmic web. Scientists have now created the largest map to date of this mysterious substance, but they find it could imply there is something wrong with Einstein’s theory of relativity.
　　Using artificial intelligence methods to analyse images of 100M galaxies, members of the international Dark Energy Survey (DES) team—which works on revealing the nature of the dark energy driving the expansion of our universe—have created a map that covers a quarter of the southern celestial hemisphere. Visualised as pink, purple and black-mottled patches, clustered inside a pale ring, the brightest areas of the map reveal the densest areas of dark matter, corresponding to super clusters of galaxies. The black patches are cosmic voids.
　　Dr. Niall Jeffrey said: " We can really see this cosmic web structure, including these enormous structures called cosmic voids, which are very low density regions of the universe where there are very few galaxies and less matter. " Scientists are interested in these structures because they suspect that gravity could behave very differently inside them. By identifying their shapes and locations, the map could provide a starting point for further study.
　　According to the standard model of cosmology, the universe started with the " big bang" then expanded. Although calculations by the DES team suggest the distribution of this matter is broadly consistent with the predictions in the standard model, it is not a perfect fit. " If you look out into the universe, the matter isn’t as clumpy as expected, there are hints that are smoother," said Jeffrey. " It may seem a relatively small thing, but if these hints are true then it may mean there’s something wrong with Einstein’s theory of general relativity, one of the great pillars of physics. " One possibility is that some of the measurements that have been used to calculate how the universe should look are not correct. Alternatively, it could be a problem with the underlying model.
　　Ofer, a co-author of the study, was not prepared to go that far but added; "What I say is, look, don’t be too relaxed. There’s something there which might indicate a disparity. Work hard, try to understand it by conventional means, but keep your eyes open that it could lead to a revolution in physics. "
The map created by the DES team_________.
选项 A、draws the terrain of a quarter of the southern celestial hemisphere
B、is composed of four patches with different colors
C、deems the most brilliant areas as the densest areas of dark matter
D、regards the black patches as cosmic wormholes
答案C
解析 细节题。根据题干可定位至第二段。根据选项A可定位至第一句，但原文中并没有提到地形图的绘制，故排除；根据选项B可定位至第二句，其说法与原文中提到的三种颜色相悖，故排除；根据选项D定位至最后一句，原文中提到的是cosmic voids“宇宙空洞”，cosmic wormholes“宇宙虫洞”为偷换概念，故排除；根据选项C可定位至第二句，其中the most brilliant是文中brightest的同义表达，故选项C正确。
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