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  3. What do we learn from the new study? [originaltext]Scientists have known for dec

What do we learn from the new study? [originaltext]Scientists have known for dec

游客2023-10-16  72
问题 What do we learn from the new study?
Scientists have known for decades that the numbers of some shark species are decreasing. But a new study shows just how severely their worldwide populations have dropped in the past 50 years. The numbers of oceanic sharks fell more than 70 percent worldwide between 1970 and 2018. The information comes from a study that appeared recently in the journal Nature. Stuart Sandin is a marine biologist who works at the Scripps Institution of Oceanography. He says that sharks are great hunters, fast swimmers and have extraordinary senses.
选项 A、Marine biologists estimate that the worldwide population of sharks will be rising gradually.
B、A large number of shark species are found to be on the verge of extinction.
C、The numbers of oceanic sharks have dropped sharply in the past 50 years.
D、With effective measures taken, the population of marine creatures has steadily increased.
答案 C
解析 题目问的是我们从这项新的研究中学到了什么。根据新闻可知，一项新的研究显示，全球鲨鱼的数量在过去50年里下降得多么严重。故答案为C。
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