Ann Makosinski，16，was just another teenager with another science project when she joined her local science fair（展览会） in Victoria，Canada．Her invention，a flashlight that is powered from hand heat，took second place at the competition．

"It's a very simple project，"said Arthur Makosinski，Ann's father．"Let's move on and do something different．"

But if Ann had left her project，the world may have missed out on a light source that doesn't use batteries，solar power or wind energy．

Two years ago，Ann found that a friend of hers in the Philippines didn't have electricity．According to Ann，her friend couldn't complete her homework and was failing in school．"So I wanted to do something to help my friend in the Philippines，"said Ann．

Ann got to work．After a few experiments，her"hollow flashlight"was born．It shines for as long as you hold onto it．At the suggestion of Kate Paine，her ninth grade biology teacher，Ann submitted her flashlight into the Google Science Fair．

A few months later，in September，Ann was named a finalist in her age group．At the science fair's celebration night，Ann and Arthur stayed with top Google engineers，well-known scientists and some of the most creative kids on the planet．

Hers was the last name they expected to be called out the winner for her age group．When it was，Arthur almost dropped his camera!

And then there's the business of changing the original design for market．At about 24lumens （流明；光束强度单位），Ann's flashlight's brightness falls shy of commercial flashlights．

Of her efforts to increase her flashlight's efficiency，she said，"I want to make sure my flashlight is available to those who really need it．"

29．What did Ann's father think about her idea of the flashlight？___

A．He didn't think much of it．

B．He was satisfied with it．

C．He considered it to be different．

D．He thought it would be har