下列关于普萘洛尔抗心律失常的描述，错误的是
A、降低窦房结的自律性B
暂无解析
Thesadconditionofwomenworkingashouseservantsaroundtheworldreceivedmuchmedia_____earlythisyear.
Mrs.Smithlockedboththefrontandthebackdoorsbeforeshewenttobed______thatsomeonemightstealintothehouseatnight.
Thenewdiscovery_______beofgreatservicetomankind.
句子写作：Youalwaysremainavictim
Wateriscomposed_______hydrogenandoxygen.
