题型:问答题 简答题 — ____ do you watch TV every week ? 一Less than two hours I often have much homework to do. [ ]A.How many B.How much C.How long D.How often 查看答案
题型:问答题 简答题 关于茶碱类治疗支气管哮喘的药理作用,下列哪一项是不正确的A.抑制磷酸酯酶B.刺激肾上腺分泌肾上腺素C.增强气道纤毛清除功能D.抗感染作用E.阻断因吸入刺激物引起的反射性支气管收缩 查看答案