| 托福考试易错题（2019/5/7） |
| 第1题： {$mediaurl} What aspect of the K-T extinction event does the professor mainly discuss A、The scientists who first discovered it. B、A、phenomenon that could have caused it. C、Its similarities with prior extinction events. D、Its long-term effects on the planet. |
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| 第2题：文章：folic acid 对人很重要，所以被添加到面粉中。文章不同意这个做法，认为有3个危害，分别是1大家只能得到15%的需求量 2过量对人不好 3可以吃专门的有folic acid的药 LECTURE、一一反对 1.统计样本上的误差，没有考虑到不同人群的误差 2.可以添加moderate,不用过量 3.最需要营养的是刚怀孕的时候，而那时，女子往往不知道自己怀孕，更不会吃药的。 |
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| 第3题：Questions 22-31:The first peoples to inhabit what today is the southeastern United States sustained themselves as hunters and gathers. Sometimes early in the first millennium A、D、, however, they began to cultivate corn and other crops. Gradually, as they became more skilled at gardening, they settled into permanent villages and developed a rich culture, characterized by the great earthen mounds they erected as monuments to their gods and as tombs for their distinguished deaD、Most of these early mound builders were part of theAdena-Hopewell culture, which had its beginnings near the Ohio River and takes its name from sites in Ohio. The culture spread southward into the present-day states of Louisiana,Alabama, Georgia, and Florid A、Its peoples became great traders, bartering jewellery, pottery, animal pelts, tools, and other goods along extensive trading networks that stretched up and down eastern NorthAmerica and as far west as the Rocky Mountains.About A、D、400, the Hopewell culture fell into decay. Over the next centuries, it was supplanted by another culture, the Mississippian, named after the river along which many of its earliest villages were locateD、This complex civilization dominated the Southeast from about A、D、700 until shortly before theEuropeans began arriving in the sixteenth century.At the peak of its strength, about the year 1200, it was the most advanced culture in NorthAmeric A、Like their Hopewell predecessors, the Mississippians became highly skilled at growing food, although on a grander scale. They developed an improved strain of corn, which could survive in wet soil and a relatively cool climate, and also learned to cultivate beans. Indeed, agriculture became so important to the Mississippians that it became closely associated with the Sun --- the guarantor of good crops. Many tribes called themselves "children of the Sun" and believed their omnipotent priest-chiefs were descendants of the great sun goD、Although most Mississippians lived in small villages, many others inhabited large towns. Most of these towns boasted at least one major flat-topped mound on which stood a temple that contained a sacred flame. Only priests and those charged with guarding the flame could enter the temples. The mounds also served as ceremonial and trading sites, and at times they were used as burial grounds. The word "supplanted" in line 13 is closest in meaning to A、conquered B．preceded C．replaced D．imitated |
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| 第4题：Stereo recording began with the introductory of two-track magnetic tape in the 1950’s. A、 B、 C、 D |
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| 第5题：The ice of a glacier that reaches the sea breaks off______. A、and forming icebergs B．to form icebergs C．icebergs have-formed D．when the formation of icebergs |
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