高考英语课时质量评价10UNIT4.docx
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1、课时质量评价(十)必修第二册UNIT 4主题语境:重大政治、历史事件,文化渊源I .阅读理解A(2023 珠海模拟)An individual from an unknown hominid (原始人类)species walked across a field of wet, volcanic ash in what is now East Africa around 3.66 million years ago, leaving behind a handful of footprints.Those five ancient footprints, largely ignored sin
2、ce they were partly unearthed at Tanzania5 s Laetoli site in 1976, show features of upright walking by a hominid, a new study finds. Researchers had previously considered them hard to classify, possibly produced by a young bear that took a few steps while standing. But the latest analysis refutes th
3、at suggestion.McNutt, DeSilva, who started the new investigation as a Dartmouth College graduate student, and their colleagues fully dug out and cleaned the five Laetoli footprints in June 2019. Then they measured, photographed and 3-D scanned the ancient tracks. McNutt5 s group focused on two footp
4、rints that were particularly well-preserved. Foot shapes, sizes, and walking characteristics of the Laetoli individual differed in various ways from those of other hominid individuals at the same site. The prints also didn,t match those from modern black bears and modern chimps (黑猩猩) walking upright
5、.The Laetoli individual possessed a wider, more chimplike foot than humans, the researchers say. Its big toe stuck out slightly from the second toe (月却趾),but not to the degree observed in chimps. On one step, the Laetoli individuaf s left leg crossed in front of the right leg, leaving a left footpri
6、nt directly in front of the previous track . People may cross-step in this way when trying to regain balance. And bears and chimps assume a relatively wide standing due to knee and other bone arrangements that prevent them from walking like the Laetoli individual and probably from cross-stepping, th
7、e scientists say.Given that only two of the ancient footprints are complete enough to analyse thoroughly, the possibility that a chimp other than a hominid made the Laetoli footprints can,t be ruled out, says William Harcourt Smith, a scientist at Lehman College. But evidence of cross-stepping is en
8、ough to prove that it was a hominid track maker, he says.1. What does the underlined word refutesin Paragraph 2 mean?A Objects to.B. Supports.C. Puts forward.D. Criticises.2. Why do researchers think the footprints were unlike those of bears or chimps?A. They are less chimplike.B. They have toes sti
9、cking out.C. They show relatively wide standing.D. They possess features of cross-stepping.3. What does William think of the new research finding?A. Its convincing.B. Its challenging.C. Its confusing.D. Its conflicting.4. What is the purpose of the text?A. To describe a major event.B - To share a ne
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