【正确答案】 C

【答案解析】[听力原文]
   The Environmental Research Commission by the Australian Parliament has found that pollution has turned the ocean into what they called a plastic soup. A parliamentary investigation has heard micro beads that are used in cosmetics and tooth paste are being ingested by fish and then in turn by consumers of seafoods. Researchers have argued that the tiny beads absorb chemical toxins in the water. A recent study by Australia's official science agency found that almost 60% of all sea bird species they examined had plastic in their stomachs.
   According to the news, where are the micro beads used?
细节考查题。由画线句子可知微珠主要用在化妆品和牙膏中。故答案为C。