单选题 Read the following passage and choose the best answer to each of the questions after the passage. Last year was reported to be the hottest ever measured, continuing an upward trend that is a direct result of manmade greenhouse gas emissions. The key to the measurements is the oceans. Oceans absorb more than 90 percent of the heat that results from greenhouse gases, so if you want to measure global warming you really have to measure ocean warming. The measurements have been published in the journal Advances in Atmospheric Sciences in an article by Lijing Cheng, the lead author, and his colleagues from the Institute of Atmospheric Physics in China. The article charts ocean heat back to the late 1950s, showing a steady increase. Ocean warming is an incontrovertible proof of global warming, and there are real consequences to a warming ocean. Firstly, warmer water expands, and this expansion causes sea levels to rise. Approximately a third of the rise in ocean waters is a result of the heat absorbed by the oceans. Scientists expect about one meter of sea level rise by the end of the century, which would be enough to displace 150 million people worldwide. The warming waters also make storms more powerful. In the US recently, we have seen hurricanes passing over extremely warm ocean waters, which has supercharged them and increased the damage they cause. Other kinds of storms are also being made stronger. Heavier downpours of rainfall are increasing flooding around the world. Simply put, our emissions of greenhouse gases have caused loss of life and property. We are all responsible, but the people who have denied the science and the solutions own a special responsibility that history will judge harshly. It isn't just humans that are suffering and will suffer more in the future. The heating of oceans is causing tremendous problems for sea life, particularly coral reefs. If we continue to warm the planet, we can expect to lose much of these reefs. We can also anticipate reductions in fish and other sea life populations小题:What does the study indicate about the ocean heat since the late 1950s