An Interesting Experiment
Preparation	Glasses，（1） ，tape，paper，thermometer
Step	Roll the two glasses with white paper and black paper．
Use some tape to（2） ．
Fill the glasses with same water and leave them out in the sun for more than （3） hours．
Result	The black paper is（4） the white paper．So people wear （5） in summer．

（1）A．ice
B．water
C．salt
（2）A．hold the paper onto the glasses
B．hold the paper together
C．let water run out
（3）A．four
B．three
C．two
（4）A．cooler than
B．hotter than
C．a(chǎn)s hot as
（5）A．heavy clothes
B．dark coloured clothes
C．light coloured clothes