A screwdriver.
screwdriver: 螺絲刀；改錐
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If you are in a dark room with a candle, a wood stove and a gas lamp. You only have one match, so what do you light first?
What side has the most feathers on a chicken?
I took enough pills to kill a 500 pound man, why am I still alive?
If a rooster is standing on top of a slanted roof of the barn and lays an egg, which way will the egg fall?