题型：语法填空（语篇） 题类：模拟题 难易度：困难
河南省开封市2020届高三英语第三次模拟考试试卷
Climate change is bad news for the world's coral reefs. As global temperatures increase, the world's glaciers melt, （cause） sea levels and ocean temperatures to rise. These conditions have led to coral bleaching（白化） events, the coral turns white and slowly dies, unable to survive in its changing environment.
Global sea levels （expect） to rise about 1.5 feet by 2100, meaning coral reefs will be deeper underwater than they were （previous）in. The deeper the coral, the less light it receives, and the less （able） it has to make food. This has potential to change the entire ecosystems of reefs and the marine life they support.
But a new study from a team of （researcher） at the National University of Singapore （NUS） provides a ray of hope. They studied nearly 3,000 corals from 124 species at two reefs off coast of Singapore: Pulau Hantu and Raffles Lighthouse. The water where these reefs live is （cloud）, murky and thick with sediment（沉淀物）.
The light reaches down about 26 feet, yet there are corals growing well that level and below. They've adapted to surviving under the changing conditions. Researchers say it's likely that these corals will survive sea-level rise, according to the findings （publish） in the journal Marine Environmental Research.
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