介绍： It has been found that inadequate recovery often leads to poor health and accidents.

练习：

Mental relaxation is much needed, just as physical relaxation is.

逻辑：
a based on ，depend on，provide with ，take into account
b but and or because
c 比较级 ，平级比较

介绍： It has been found that inadequate recovery often leads to poor health and accidents.

练习：

Mental relaxation is much needed, just as physical relaxation is.

逻辑：
a based on ，depend on，provide with ，take into account
b but and or because
c 比较级 ，平级比较