题目

短文填空：用方框中所给单词的适当形式填空，使短文完整正确。 have, photo, know, usual, long, begin, inventor, many, will, itHave you ever seen a hitchhiker(搭便车的旅行者) standing by the side of a road? Now drivers in Canada might see an 【1】 hitchhiker : a hitchhiking robot which is called Hitchbot. One of its 【2】, David Harris Smith, has hitched across Canada three times. Smith and a friend, Frauke Zeller, have built Hitchbot because they wanted to see if people 【3】 stop and give the robot a lift and talk to it.The robot can chat about things it 微量元素在人体内的含量低于0.01%，但对维持生命活动，促进生长发育有极其重要的作用。关于微量元素，下列说法错误的是   (　　)。A．食用加碘食盐以防止碘缺乏病 B．使用铁锅炒菜可以减少贫血病的发生 C．保持科学的饮食习惯，全面摄入各种微量元素 D．多吃各种营养品，以增大微量元素的吸收