Unit 7 必背词组与句子live to be 200 years old 活到200 岁live on the earth居住在地球上live on a space station 生活在空间站live with somebody 和某人生活在一起use the subway less更少使用地铁very big and crowded非大而拥挤prediction about the future关未来的预测a book about future一本关未来的书in the future在未来be more crowded and polluted 更拥挤，更污染be in (great) danger处（巨大的）危险中have to do something不得不做……fly to other planets飞到另外的星球play a part in saving the earth在拯救地球中起重要作用blue skies蓝色的天空spend time together on weekends末在一起度过fly rockets to the moon飞火箭到月球an apartment across the street from here这条街道的对面的公寓watch movies about the future看关未来的电影human servants人类仆人do jobs like working in dirty or dangerous places做那些在又脏又危险的地的工作do simple jobs over and over again反反复复做证简单的工作help to do something帮助做……get bored变得厌倦make robots look more like humans使机器人看起来象人类disagree with somebody不同意某人的意见agree with somebody同意某人的意见If buildings fall down with people inside…要是楼房倒塌，把人压在里面……look for …寻找……at some point, …在一定的时候，……do the same things as we can 做我们能做的事情keep a bird养鸟look less smart看起来没有那么漂亮take a holiday度假the meanings of words单词的意思fresh water淡水clean air清新的空气clean the kit |
