The author in the reading passage explores three major functions of the carved stone balls.
However, in the listening material, it respectively contradicts all assertions
in the reading by claiming that none of the functions are convincing.
First of all, the reading passage suggests that the stone balls were weapons,
the listening material argues that the stone balls are not weapons
due to the fact that they do not show signs of use and the surfaces are well preserved,
which means they are neither cracked nor broken and thus cannot be used as weapons.
Moreover, the reading passage states that the stone balls were used
as primitive weighing system due to their uniform size.
The listening material contends that the stone balls cannot be used as weighing systems
because their masses vary too considerably from each other
thanks to the different densities of various kinds of stones.
Therefore, the balls could not function as weighing system.
Finally, the reading passage asserts that the stone balls served a social purpose
as social marker owing to their elaborate designs, while the listening material proves that
this claim is indefensible by pointing out that they are impossible to show social status
because the balls are carved with not only intricate patterns but also simple ones;
besides, none of the balls were found in the ancient tombs or graves
but people at that time should have been buried with their possessions.
To sum up, based on thorough analysis of the whole situation,
the listening material disagrees with the reading passage completely.