题目

我国政府以国家标准的方式规定在食盐中添加碘酸钾（KIO3），据此回答下列问题： （1） 碘是合成下列哪种激素的主要原料之一．A．胰岛素 B．甲状腺激素 C．生长激素 D．雄性激素 （2） （2）长期生活在缺碘山区，又得不到食盐供应，易患．A．甲状腺亢进 B．贫血症C．地方性甲状腺肿 D．糖尿病 （3） 可用盐酸酸化的碘化钾淀粉溶液，检查食盐中是否含碘酸钾．反应的化学方程式为：5KI+KIO3+6HCl═6KCl+3I2+3H2O．此反应的氧化剂是 （Cooperation (合作) and competition are both important. They are both necessary for a person to achieve _______in his life.Learn to be cooperative. No one likes a selfish （自私的）or greedy(贪婪的) person.________, everyone likes a cooperative and friendly person. Everything we do today, _______in doing business or making friends, depends on our ability to get on with one another. In our society, most tasks need the cooperation of many people so that they can ________ efficiently(有效率). So we must try to be cooperative. Each person is like a small part of a machine. If only one part is out of order, the machine can’t be running well_________, transportation and communication systems are fast ______and people all over the world can keep in touch with each other________. It’s hard for a person who is always from the society to have a deep understanding of the world he lives in and to finish a feat(功绩) in his career (生涯). Cooperation is becoming more and more important for a person ________a good life. Being competitive also has a place in life. If you want to get more success and be better than others, you must work harder and study more carefully. The desire to succeed and do better than others _______us to work harder. If there were no competitions, a sports meeting would never be exciting and successful, and we could never have champions.We cooperate with others to be more competitive, we ________ to earn a better environment for cooperation leads us to realize our goals and meet our needs.1.A. success B. successful C. succeed2.A. But B. However C. So3.A. which B. if C. whether4.A. finish B. being finished C. be finished5.A. Except B. Beside C. Besides6.A. develop B. developing C. developed7.A. easier B. more easily C. more difficultly8.A. getting B. to get C. got9.A. encourage B. encourages C. to encourage10.A. complete B. compare C. compete