Where can you go to listen to important people talk about important subjects? BigThink.com is a new website that allows Internet users to discuss certain topics with world experts. Subjects discussed on BigThink include the environment, music and questions about happiness and personal identity. The website has been called a YouTube for thinkers. Victoria Brown and Peter Hopkins created BiThink.com They said that people needed an international place to communicate with each other and discuss the important issues (话题)of our times. On the BigThink website, when you click on (点击)a subject, you will find a video of a person talking about his or her ideas. For example, you can listen to United States Senator Ted Kennedy talking about education and other things. Besides, you can read the comments(评论) and questions written by other visitors to the website. More than one hundred experts have expressed their ideas on the website. BigThink's creators started the website by first getting famous people to agree to be videoed. They began by interviewing several well-known professors from Harvard University. Then they used the names of these professors to gain the trust of others and get them to take part in the project. The website says BigThink belongs to everyone. Its motto(格言) is: "We are what you think." So, go online and start thinking big.

下列是两栖动物的是（   ）

We should wear special boots __________ us floating away into the space .

“实现产权清晰、权责明确、政企分开、管理科学，健全决策、执行和监督体系，使企业成为自主经营、自负盈亏的法人实体和市场主体。”这一方针主要用于指导（    ）