2014
高考英语阅读理解精英定时训练题（6）及答案《甘肃省武威三中2013模拟（5）》b animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need．it has been demonstrated（证明）that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins even though there is no di
