期末检测卷-【创新思维】2019版英语同步双基双测AB卷（北师大版必修3）

同步双基双测AB卷(八) 期末检测卷 本试卷共120分，考试时间100分钟。 第一部分 第二部分 第三部分 总　分 分数 第一部分　阅读理解(共两节，满分40分) 第一节(共15小题；每小题2分，满分30分) 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 A There's no good evidence to prove that life exists or ever existed on other planets beyond the earth.Hundreds of biologists，geologists，chemists and astronomers have conducted research on astrobiology(天体生物学)．That's because there is plenty to think about before we actually find alien life.Scientists tend to be more confident than ever that life does exist out in the universe. In 1996 Onstott dug up rocks a mile below the surface，and he extracted(提取)bacteria that were living cheerfully in harsh conditions completely isolated from the rest of the biosphere(生物圈)．Onstott's discovery is just one of dozens that established the existence of so­called extremophiles(嗜极生物)，bacteria and other forms of life thriving in such hostile places.Life can deal with a wider range of conditions. Miller had proved the origin of life by passing electricity through a glass container of organic chemicals to see what came out.Bada found fascinating hints that the origin of life may well be on an Earth­like planet rather than the exception.Kaufman dealt with the question of how many such planets are likely to exist. Unfortunately，the most habitable planet found is widely believed not to exist life at all.Buder and Vogt appropriately noted that their find would have to be confirmed by others before it could be considered rock solid.The same applies to evidence of alien life.In no case was any real E．T.proved to exist.The twin Viking probes landed on Mars and performed on­site tests of the soil，looking for life.Most came back negatively，but one，designed by NASA scientist Gilbert Levin，showed suspicious activity. Research has proved what's true today often is overturned tomorrow，and what's rejected today may be accepted tomorrow.Even if you limit your thinking to life，the Milky Way is likely teeming with life.Researchers are considering the po