如右图用绳子把一个铁锁悬挂起来。把铁锁拿近自己的鼻子，稳定后松手，头不要动。铁锁向前摆去又摆回来，铁锁摆回时_1 (填“会”或“不会”)碰到自己的鼻子。在摆动过程中，铁锁的_2能和_3能在不断转化。

题干

如右图用绳子把一个铁锁悬挂起来。把铁锁拿近自己的鼻子，稳定后松手，头不要动。铁锁向前摆去又摆回来，铁锁摆回时____ (填“会”或“不会”)碰到自己的鼻子。在摆动过程中，铁锁的 ____ 能和 ____ 能在不断转化。

上一题下一题 0.0难度选择题更新时间:2019-01-31 12:16:25

不会,（重力）势,动

A

Problems	Causes	Advice
Feel stressed	Too much homework. Don't have enough time for their hobbies.	Make a plan for study and hobbies. Find time to relax.
Get short sighted (近视)	Too much homework. Bad study habits.	Do homework or read in a correct way.
Fight with each other	Don't know how to get on well with classmates.	Make more friends and understand each other.
Don't like to study	Play computer games too much.	Play computer games just for a short time.
Get fat	Have more pocket money to buy snacks. Don't like to do exercise.	Use your pocket money to do something meaningful. Do exercise every day.