What is colour? Why do some of the things around us look red, some green, others blue?
Colours are really made by reflected(反射)light．We see colour because most of the things reflect light．Something is red, for it reflects most of the red light．In the same way, if something is green, it reflects most of the green light．If something reflects all light, it is white．If it doesn't reflect any light, it is black．
Some of the light is reflected and some is taken in(吸收)and turned into(变成)heat(热能)．The darker the colour is, the less light is reflected, the more light is taken in．So dark-coloured(深色的)clothes ae warmer in the sun than light-coloured clothes．
(1)
When something reflects light, we can ________．
[ ]
A．
see its colour
B．
see its heat
C．
not see its colour
D．
see nothing
(2)
Something looks white because it reflects ________．
[ ]
A．
some light
B．
no light
C．
all light
D．
most light
(3)
The dark-coloured clothes are warm because ________ is taken in．
Small children often laugh at(嘲笑)a lame(瘸子)or a blind person, or at someone who isn't dressed as well as they are．But as they grow up, they learn not to hurt people's feelings by laughing at their problems．They learn to laugh at other things．Most important, they learn to laugh at themselves．
Suppose(假设)you're playing a game．You make a mistake and lose．Do you become angry? Or can you laugh at yourself and hope to do better next time?
Suppose you're at a special dinner．You spill(溢出)some food．Why keep worrying? Why not laugh it off and enjoy yourself anyway? If you can, it's a good sign you have grown up．
(1)
This passage is about ________．
[ ]
A．
why laughter is good for your body
B．
what you should laugh at
C．
when babies learn to laugh
D．
where you may laugh
(2)
The writer says small children laugh at people who ________．
[ ]
A．
have problems
B．
spill food
C．
dress well
D．
play games
(3)
The writer shows how laughter could help you not to ________．
[ ]
A．
make a mistake
B．
lose a game
C．
become angry
D．
try again
(4)
Next the writer shows how laughter could keep you from ________．
[ ]
A．
spilling food
B．
worrying
C．
enjoying yourself
D．
growing up
(5)
If you find a new skill(技能)hard to learn, you should ________．
