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碰撞传感器的作用

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防盗止动系统的目的

Listen to a short passage concerning entrepreneur and fill in the missing information.[音频]The 1 definition of an entrepreneur is a person who organizes and accepts the risks of a new business. Entrepreneurs may have a new product or service to 2 . Or they may have ideas for new ways to do business.But an entrepreneurial spirit does not have to 3 the business world.Lately we hear more and more about social entrepreneurs. What they do is 4 ; they might even act like business entrepreneurs. They might 5 money in projects or get others to support them.But social entrepreneurs say they are not 6 by a desire for profits.Their most important goal, they say, is to create social value. They organize and support programs that 7 improve conditions in communities.Social entrepreneurs say they look for solutions to needs without leaving them to government or industry to solve. And they say they try to 8 the solution. In other words, to change the system, they try to get whole societies to change.There are many historical examples of people who might be called social entrepreneurs. Susan B. Anthony, for example,9women's rights in the United States. Vinoba Bhave created the Land Gift Movement to help India's poor and 10 .

内部类仅供它的外嵌类使用,其他类不可以用某个类的内部类声明对象。

A. 对
B. 错

static内部类不能操作外嵌类中的实例成员变量。

A. 对
B. 错

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