按照我国登月计划，2017年“嫦娥五号”的返回舱将载着月球土壤回归地球，地面科技人员对“嫦娥五号”的控制是靠 ____（选填“电磁波”或“声呐”）来传递数据信息的．“嫦娥五号”月球探测器的太阳能电池板将太阳能转化为电能，电能属于 ____（选填“一次能源”或“二次能源”）

已知双曲线$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1(a>0,b>0)$的两条渐近线均和圆C:$x^2+y^2-6x+5=0$相切,且双曲线的右焦点为圆C的圆心,则该双曲线的方程为(    )

    Lao she Teahouse

    It is named after the famous Chinese writer, Lao She, and one of his best-known plays, Teahouse. It has three floors. Customers here can enjoy many kinds of traditional Chinese art performances, and taste beijing-style snacks

    Location: Qianmen Xidajie, Xuanwu District

    Te:010-63036830

    Wanghaixuan Teahouse

    Though we can't see the sea at this teahouse, it's still a good place to drink tea it's a bit small but the hall is big enough. And you can enjoy the performance of the waiters

    Drink a cup of hot tea and have some fresh desserts

    Location: Deshengmen Dajie, Xicheng District

    Tel:010-64010791

    Yuansu Teahouse

    It is a quiet place. There are many kinds of popular tea leaves for you to choose. And you can notonly drink tea but also enjoy music by Chinese traditional instruments. Customers here can have a good time

    Location: Xinyuanxili Dongjie, Chaoyang District

    Te:010-64673079

阅读下列短文内容，回答问题。

    How do you spend your spare time? There will be different answers to it. Most people in Poland have their own ways of spending free time. Sometimes they just want to have a rest, but they try to do something more pleasant most of the time. They have many different hobbies, which help them to get away from their everyday problems and spend their free time happily.

Many Polish people like traveling. They look for new places that they have never been to and add new and exciting experiences to their journey. Some of them like to climb mountains, others like to go to the sea or a lake to swim, because these can make them get exercise and are good for their health.

    Many Polish people also like to do sports in their free time. They are usually crazy about football, and football is regarded as the Polish national sport. Many football fans may support a certain team, so they go to watch every match of the team they support, and they buy many things that have any relation with the team. Watching sport and doing it are both good ways to relax.

In addition, doctors say that doing sports is very good for the health. Many people in town, especially young men, often go to the gym to attend the exercise classes to keep fit.

    Besides these ways, Polish people have many other ways to spend their free time. And they really enjoy their free time.