木材的木节会降低其抗压和抗拉强度。
错误
暂无解析
Mrs.Londonhas____thatsheisunabletogetajob.
Thedoctor____isleavingforAfricanextmonth.
Theoldmanshouldbetreatedwith____.
Humanbeingsaresuperiortoanimals_____theycanuselanguageasatooltocommunicate.
Tammy:Someoneisatthedoctor.
Richard:______.
