When you go out for a business trip or a weekend,you （1）______ have to pack your mobile phone,laptop（手提电脑）,MP3 player,camera and so on.It\’s wonderful for you to （2）______ no batteries,no chargers（充电器） and no wires.
This is the future "wireless power".That is （3）______ of passing on electricity through the air to laptops and other small electrical devices without the need of wires.These new devices were （4）______ the first trade products in Las Vegas at the International Consumer Electronics Show,the world\’s biggest trade （5）______ for small electrical devices.
Experts believe this is just the （6）______ .In a world without wires,you can use a laptop in cafes or airports （7）______ you put an "electricity hotspot" inside and no longer have to search for a charger from your bags.It is said that you will be able to  （8）______ your devices in the room that has wireless power,and then they will get the power （9）______.If one room has wireless power,you would know that once you walk through the front door,your mobile phone starts charging up,even when it is still in your bag or pocket.You\’d never need to (10)______ the right charger again.This kind of technology,named Power Bean,can turn electricity into a laser（激光）,then pass it on as heat,across the room.