[解析]
(1)推理判断题。根据第一段If you live in San Diego,you've probably noticed some strangely coloured water on the beach lately.You might wonder about red tide,but it's actually an intentional job.Scientists at UC San Diego Scripps Institution of Oceanography and University of Washington have been experimenting with dyeing (给……染色) the ocean at San Diego beach pink.What could they possibly be up to(如果你住在圣地亚哥,你可能会注意到最近海滩上有一些奇怪的颜色的水。你可能会对赤潮感到好奇,但这实际上是一项有意为之的工作。加州大学圣地亚哥分校斯克里普斯海洋学研究所和华盛顿大学的科学家们一直在试验将圣地亚哥海滩的海洋染成粉红色。他们到底想干什么),可知作者通过在第一段中展示圣地亚哥海滩上的奇特现象进而引出文章的话题。故选A。
(2)细节理解题。根据第二段的This is being done for a study that examines how fresh water on the outlet of the sea is intermixing with the ocean.The experiment is called Plumes in Nearshore Conditions (PiNC)(这是为了一项研究而做的,该研究调查了海洋出口的淡水是如何与海洋混合的。这项实验被称为近岸条件下的羽流),可知,近岸条件下羽流(PiNC)实验的目的是为了展示淡水是如何与海水结合的。故选B。
(3)细节理解题。根据第三段的The fresh water is dyed pink so that the team can easily keep track of it when fresh water is added to the sea water.The dye does not threaten the wildlife living there and is then spotted as it progresses in the water(淡水被染成粉红色,这样当淡水加入海水中时,团队可以很容易地跟踪它。这种染料不会威胁到生活在那里的野生动物,然后随着它在水中的发展而被发现),可知团队使用粉色染料是因为它既容易识别又环保。故选C。
(4)推理判断题。根据最后一段Giddings的话We will combine the results from this experiment with a former field study and computer models to help us further understand how the dyed fresh water spreads(我们将把这次实验的结果与以前的实地研究和计算机模型结合起来,帮助我们进一步了解染色的淡水是如何扩散的),可知根据Giddings的话,我们可知研究人员接下来将整合更多前人的研究成果。故选D。