2.B 推理判断题。根据...to find out how widespread the problem was in the past.和...to investigate was how ichthyosaurs adapted to the problem of decompression...可知答案为B项。
3.C 推理判断题。第四段开始说到...he assumed that signs of the bends would be rarer in younger fossils...,接下来又说Instead,he was astonished to discover the opposite,由此见,研究结果和他开始的预测相反,故选C项。
4.A 推理判断题。由倒数第二段的If ichthyosaurs did evolve an anti-decompression means...But that is not what Dr Rothschild thinks happened.可知,Dr Rothschild并不认可鱼龙的抗减压进化途径,故A项正确。
【疑难词汇解读】
evolve vt.使发展,设计,发出
Maize evolved from a wild grass in Mexico.
玉米是从墨西哥的一种野生禾本植物进化而来的。
【长难句子分析】
开始时,他假设弯曲的迹象在年小的化石中较少见,这也反应出了他们对付减压的措施的逐渐进化。
阅读下列短文,从每题所给的A、B、C和D项中,选出最佳选项。
2017届六校第二次联考A
Mark and his brother Jason both were looking at the shining new computer enviously. Jason was determined not to go against their father’s wishes but Mark was more adventurous than his brother. He loves experimenting and his aim was to become a scientist like his father.
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