2. 职称英语
  3. Directions: An introductory sentence for a brief summary of the passage is provi

Directions: An introductory sentence for a brief summary of the passage is provi

游客2024-01-03  59
问题 Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage.
Write your answer choices in the spaces where they belong. You can either write the letter of your answer choice or you can copy the sentence.
"Petroleum" is a broad term that includes both crude oil and natural gas.
                        Answer Choices
[A]Petroleum formation is the result of biological as well as chemical activity.
[B]Petroleum tends to rise to the surface, since it is lower in density than water.
[C]The difficulty of finding adequate sources of oil on land has resulted in a greater number of offshore drilling sites.
[D]Current methods of petroleum extraction enable oil producers to recover about half of the world’s petroleum reserves.
[E]Petroleum extraction can have a negative impact on the environment.
[F]Accidents involving oil tankers occur when tankers run into shore reefs or collide with other vessels.
选项
答案 A, C, E
解析
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