【正确答案】 D

【答案解析】原文：For the first time ever, scientists have recorded the heart rate of the world’s largest creature: the blue whale. To get this reading, they attached an electrocardiogram device to the body of a whale. They found that the mammal’s heart rate can slow to just two beats a minute as the animal searches for food below the surface of the ocean. The highest heart rate they recorded was 37 beats a minute after the whale returned to the surface for air.题目问关于新开发的电池，新闻报道了什么。新闻中提到“developed lightweight batteries…useful in many applications—truly portable electronics：mobilephones，pacemakers，and long-distance electric cars.The invention of the lithium-ion battery has had a deep influence on modern life”由此可见，这款新电池质量轻,应用于许多便携的电子产品应用,如手机、心脏起搏器、长途电动汽车,这种锂离子电池对现代生活有很大的影响,故选D。