单选题
Green water near coastlines is almost always caused by ______.
【正确答案】
D
【答案解析】[分析] 细节题型。
见文章第一句:The blue of the sea is caused by the scattering of sunlight by tiny particles suspended in the water.蓝色的海水是由于阳光对悬浮于水中的微粒造成散射形成的。第四、五句:This is caused by yellow pigments being mixed with blue water.Phytoplankton are one source of the yellow pigment.海水呈绿色是由于蓝色的海水和呈现黄色的浮游生物混合形成的。所以选项D正确。