托福考试易错题（2019/3/20）

第1题：

【分析题】：

第2题： {$mediaurl} Why does the man say this: A、To encourage the woman to elaborate on her suggestion, B、To accept the woman’s proposal. C、To indicate that the woman is mistaken. D、To politely express doubt about the woman’s idea,

【单选题】： A     B     C     D

第3题：Scientists have discovered that for the last 160,000 years, at least, there 　　has been a consistent relationship between the amount of carbon dioxide in the air 　　and the average temperature of the planet. The importance of carbon dioxide in 　　regulating theEarth’’s temperature was confirmed by scientists working in eastern(5)Antarctic A、Drilling down into a glacier, they extracted a mile-long cylinder of ice 　　from the hole. The glacier had formed as layer upon layer of snow accumulated year 　　after year. Thus drilling into the ice was tantamount to drilling back through time. 　　The deepest sections of the core are composed of water that fell as snow 160,000 years 　　ago. Scientists in Grenoble, France, fractured portions of the core andtemperature and of atmospheric(10)measured the composition of ancient air released from bubbles in the ice. Instruments 　　were used to measure the ratio of certain isotopes in the frozen water to get an idea 　　of the prevailing atmospheric temperature at the time when that particular bit of 　　water became locked in the glacier. The result is a remarkable unbroken record of (15)levels of carbon dioxide.Almost every time the chill of an ice age descended on the planet, carbon　　dioxide levels droppeD、When the global temperature dropped 9F (5℃), carbon dioxide levels　　dropped to 190 parts per million or so. Generally, as each ice age ended and theEarth basked in a　　warm interglacial period, carbon dioxide levels were around 280 parts per million. Through the　　160,000 years of that ice(20)record, the level of carbon dioxide in the atmosphere fluctuated between 190 and 280 parts per　　million, but never rose much higher-until the industrial Revolution beginning in the eighteenth　　century and continuing today. There is indirect evidence that the link between carbon dioxide levels　　and global temperature change goes back much further than the glacial recorD、Carbon(25)dioxide levels may have been much greater than the current concentration during theCarboniferous　　perioD、360 to 285 million years ago. The period was named for aprofusion of plant life whose　　buried remains produced a large fraction of the coal deposits that am being brought to the surface　　and burned today.The phrase "tantamount to" in line 7 is closest in meaning to A、complementary to B．practically the same as C．especially well suited to D．unlikely to be confused with

【单选题】： A     B     C     D

第4题：Questions 30-39The atmosphere of Venus is quite different from ours. Measurements taken from theEarth show a high concentration of carton dioxide in the atmosphere of Venus. In fact,carbon dioxide makes up 96 percent of Venus* atmosphere; nitrogen makes up almost all the rest. TheEarth’s atmosphere, by comparison, is mainly nitrogen, with a fair amountof oxygen as well.Carbon dioxide makes up less than 0.1 percent of the terrestrial atmosphere,The surface pressure of Venus* atmosphere is 90 limes higher than the pressure ofEarth’s atmosphere, as a result of the large amount of carbon dioxide in the former.ThroughoutEarth’s history, carbon dioxide onEarth has mixed with rain to dissolve10 rocks; the dissolved rock and carbon dioxide eventually flow into the oceans, where they precipitate to fonn new terrestrial rocks, often with the help of life-forms. If this carbondioside were released from theEarth’s rocks, along with ower carton dioxide trapped inseawater, our atmosphere would become as dense and have as high a preasore as that ofVenus. Venus, slightly closer to the Sun thanEarth and thus hotter, had no’oceans in which the carbon dioxide could dissolve or life to help take up the carbon.Also, Venus has probably lost almost all the water it ever ha D、Since Venus is closerto the Sun than theEarth is, its lower atmosphere was hotter even early on. The resultwas that more water vapor went into its upper atmosphere, where solar ultraviolet raysbroke in up into hydrogen and oxygen. The hydrogen, a light gas, escaped easily; the oxygen has combined with other gasses or with iron on Venus1 surface.Studies from theEarth show that the clouds on Venus are primarily composed of droplets of sulfuric acid, with water droplets mixed in* Sulfuric acid may sound strangeas a cloud constituent, but theEarth too has a significant layer of sulfuric acid dropletsin its stratosphere. However, the water in the lower layers of theEarth’s atmosphere,circulating because of weather, washes the sulfur compounds out of these layers, whereas Venus has sulfur compounds in me lower layers of its atmosphere in addition to those inits clouds. According to the passage, what causes Venus’ high surface pressure A、Dissolving rocks B．Frequent heavy rains C．Its distance from the Sun D、The composition of its atmosphere

【分析题】：

第5题：After first establishment subsistence farms along theAtlantic seaboard,European settlers in NorthAmerica developed a maritime and shipbuilding industry.

【单选题】： A     B     C     D