U1 vocabulary1) To use the machine, first insertthe correct coins, then select (挑选) the drink you want and press the button.使用这台机器,首先插入正确的硬币,然后选择(挑选)你想要的饮料并摁下按钮2) Professor Smith translated not only from the French but also, on occasion, from the Polish.史密斯教授不仅会把法语译成英语，偶尔也会将波兰语译为英语3) Food chemists will investigate the health food (保健食品) on sale to see if it really does give the benefits claimed.饮食学家将会调查研究在售的健康食品来看下它们是否真的会对像它们标示的那样起到有益的作用。4) In retrospect , it was the wrong time
