该题题干说pika ( 鼠兔）并非有害动物，因为它在地上所打的洞有利于水土保持。录音在介绍了鼠兔这种动物之后说，在很多地区人们把它定为损坏草地的有 害动物，但与此同时研究者们说鼠兔打的洞使土地渗水率提高，这对水土保持是有好处的。题干所说的意思与录音中所说的专家意见一致，所以答案为A。

[重点难点]
理解meanwhile在此语境下带有however的转折、对比意义。

[录音原文]
Researchers have come to the defense of the pika, a mouse-like creature that many believe inspired the "Pikachu", cartoon character. In many regions people label it as a pest harming grasslands. Researchers, meanwhile, say pika holes make the water infiltration rate higher, which is good for water conservation.