世界卫生组织正式批准中国食品药品检定研究院生物制品检定所为世卫组织生物制品标准化和评价合作中心。这是全球第七个，也是发展中国家首个世卫组织生物制品标准化和评价合作中心。世卫组织的这一决定（    ）

①增加了中国在世卫组织的代表权和发言权

②有利于中国与世界各国进行科技交流与合作

③表明中国在国际生物制品领域的竞争力提高

④体现了世卫组织对国际生物制品检定工作拥有管辖主权

根据短文内容，选择正确答案。

    The computers changed our lives in the 1980s, the Internet changed our lives in the 1990s, and the robots will change our lives in the new century.

    Do you think there will be robots in people's homes? It's not a dream that every home will have a robot.

    Now, robots are not only able to help people do the housework, they can also help the doctors do the difficult operations, play chess with people, play the piano and so on.

    A new cooking robot is used in Beijing. It can cook all the dishes on the menu; you only need to wait two to four minutes. In the future, the robot will be a nurse, a security (安全）guard, or a partner in your life.

    Experts believe robots will be used everywhere from the industrial (工业的） robots to service robots. In the future, robots will become part of the family, and provide close service for people. We all look forward to the new robot age.

如图所示为某宾馆的房卡。只有把房卡插入槽中，房间内的灯和插座才能有电。房卡的作用相当于一个____接在干路上。房间里有电灯、电视等用电器，它们是____联的，它们的工作电压是____V。