男，24岁。阵发性心悸3年，突发突止，每次持续0.5?3小时不等，无头晕和黑矇。发作时查体：BP120/70mmHg,心率次/分，律齐。心电图示。该患者心悸发作时，下列可首选的治疗是
A、口服0受体拮抗剂C
暂无解析
WithanappropriateconjunctiveLastmonthIboughtawatch.Itischeap,________itgoesquitewell.
were,was,had,propaganda,propagandasLargeamountsofmoney________spenton________.
By"languageacquisitionisprimarilytheacquistionofthegrammaticalsystemoflanguage",linguistsmeanthat______.
Weshallcertainlycontactyou,assoonasweare____apositiontoentertainnewbusinessinyourdistrict.
Thesyntacticrulesofanylanguageare______innumber.
