第4题: [单项选择]The English are mainly descendants of ______, who were a group of people that occupied lands stretching from the British Isles to Gallatia. A. Celts B. French C. Vikings D. Anglo-Saxons 参考答案:D 答案解析:历史学家认为英国和爱尔兰这两个相邻的岛国居民有着不同的祖先: 爱尔兰人是凯尔特人的后代,英国人的祖先则是盎格鲁-萨克逊人。维京人生活在1000多年前的北欧,以海盗的身份抢劫掠夺,他们远航的足迹遍及整个
第19题: [填空题]With adequate training older workers may outperform young workers in reliability and consistency. 参考答案:Y 答案解析:[解析] 本题的解题关键在于training older worker。第五段第一句话说明了本段的中心the value and importance of training older worker