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学霸导读 有人说在春分那天扫把可以自己立起来，那么你有没有试过呢？
Did you balance your broom （扫把） on the spring equinox （春分）? Some people say the Earth’s rotation （地球自转） would be “in perfect balance” on that day. So your broom could stand up on its o 1 .
The t 2 is, your broom can stand upright at any time of the year, not just on the spring equinox. The heavier and w 3 the broom’s bottom is, the greater the chances of it standing up by itself.
Try it any time you like. Here are some t 4 :
Take a flat-bottomed broom. Stand it up so that the bottom is flat on the floor. Try balancing it and letting it go.
If it won’t stay upright by i 5 , push down to spread the bristles （刷子毛）. Then balance the broom upright again as you slowly let it go.
It may not w 6 every time or with every broom. But it’s fun to enjoy the “m 7 ” !
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balance
v. &n.
平衡，均衡
perfect
adj.
完美的
stand
v.
站立，直立
again
adv.
再一次