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阅读理解 You know eating fruit and vegetables is helpful. But did you know it can also make you look good? People who increased their intake over just six weeks developed a healthy glow and appeared more attractive, researchers found. Scientists at St Andrews University found eating them subtly increased yellow and red pigments in the volunteers' skin. They monitored the food intake of 35 people and took pictures of their faces, arms and hands using a sensitive camera at the start, and after three and six weeks. Increasing their intake of greens by 2.9 portions a day was found to make the [练一练](1)1971年的一天，布歇内尔边看电视边这么想： “光看太没意思了。把电视接收器作为试验对象，看它产生什么反应。”此后不久，他就发明了交互式的乒乓球电子游戏，从此开始了游戏机的革命。