治疗肺炎链球菌肺炎首选的抗生素是（）
A、青霉素A
肺炎链球茵肺炎抗生素治疗首选青霉素。
Manypeoplebelievethatscientificresearchshouldbecarriedoutandcontrolledbythegovernmentratherthanprivatecompanies.Towhatextentdoyouagreeordisagree?
TheplaceofScienceandTechnologyinModernLife.
Ifyousticktoyourcountofferwithoutanycompromisewemaynotabletomakeadeal.
航空公司的运价类别，“M”表示()。
We'dliketoexpressourdesiretoestablishbusinessrelationshipwithyouonthebasisofquality,mutualbenefitandexchangeofneededgoods.
