患者,男,20岁。反复发作胸闷,气急,咳嗽1年。查体:两肺满布哮鸣音。应首先考虑的是
A.急性支气管炎B.慢性支气管炎喘息型C.心源性哮喘D.支气管哮喘E.以上均非
参考答案:D
David’s effort was ______, because he won the first prize in the English speech contest, which made his classmates surprised.
A.paid off
B.paid back
C.paid for
D.paid up
企业销售商品在购买单位交款提货的情况下,应以收到货款、开出账单和提货单及发出商品作为收入的实现。