外研（2019）高考英语一轮复习课时练习41：选择性必修4Unit5　Intotheunknown(),以下展示关于外研（2019）高考英语一轮复习课时练习41：选择性必修4Unit5　Intotheunknown()的相关内容节选，更多内容请多关注我们

1、课时质量评价(四十一)选择性必修第四册Unit 5Into the unknownA组基础巩固. 语法填空AToday we know Antarctica as an extreme environment 1. _ (contain) ice and snow. But new research provides evidence that the area was very different in the past, 2. _ was found inside a piece of Earth sediment (沉淀物) gathered by researchers 3. _ un。

2、der the seafloor off the coast of Antarctica.In the sediment, they 4. _ (find) forest soil estimated to be about 90 million years old and this would have been in the Cretaceous Period, when dinosaurs were the main land 5. _ (animal). Johann Klages, who was the lead writer of a study on the findings 。

3、6. _ (publish) in the journal Nature, said the sediment collection was from 7. _ depth of about 30 metres below the ocean floor. Klages said an examination showed that the material formed on land, not in the ocean.The Earth has experienced in the past and is 8. _ (current) undergoing today. The rese。

4、archers said that the rainforest environment in Antarctica was especially surprising, because each year the area 9. _ (experience) a fourmonth polar night when there is no sunlight to fuel plant life. Klages said no ice sheets were present during the time, but 10. _ (season) snowfall was likely.【语篇解。

5、读】本文是一篇说明文。研究人员从南极洲海岸附近的海底收集的一块泥土沉积物中发现：这些沉积物是在陆地上形成的。1. containing考查非谓语动词。分析句子结构可知，句中已有谓语动词，此处应用非谓语。主语Antarctica和动词contain是主动关系，用现在分词形式作定语，故填containing。2. which考查定语从句。句中包含非限制性定语从句，先行词是evidence，关系词在定语从句中作主语，只能用关系代词which引导，故填which。3. from考查介词。句意：但新的研究提供了证据，证明这片区域与过去大不相同，它是在研究人员从南极洲海岸附近的海底收集的一块泥土沉积物中发。

6、现的。根据句意可知，空处表示“从，来自”，故填from。4. found考查动词的时态。此处讲述通过研究泥土沉积物的发现，是过去发生的事。与上下文时态一致，用一般过去时，故填found。5. animals考查名词的单复数。animal是单数可数名词，与主语dinosaurs和系动词were一致用复数，故填animals。6. published考查过去分词。句中findings和动词publish之间是被动关系，应该用过去分词，指这些发现被出版，故填published。7. a考查冠词。此处指收集的沉积物来自海床下大约30米的深度，a depth of. 表示“的深度”，故填a。8. currently考查副词。修饰动词undergoing用副词，故填currently。9. experiences考查动词的时态。

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