题目

Mr and Mrs White are my neighbours. Their house is small but they have a large garden. And they spend many happy hours working on it every day. We all agree the garden is great. While we spend our dollars in the market, the old couple can pick vegetables in their own garden.Last month, Mr and Mrs White invited most of the neighbours to their garden for an “all-day food festival”. They asked us to bring gloves and arrive early in the morning. We didn’t know what would take place.By 9:00 a.m., there were nine of us in the garden picking tomatoes, beans and other vegetables. At lunch, there人眼的“白眼球”和“黑眼珠”分别指（    ）A．虹膜和角膜B．角膜和巩膜C．角膜和虹膜D．巩膜和虹膜