患者,30岁。常常在晨起及晚间躺下时咳大量脓痰,伴少量鲜血,并且痰液放置后分3层,可能是
A.慢性支气管炎B.肺癌C.肺结核 D.支气管扩张E.肺气肿
参考答案:D
Ever since the Greens moved to the country a year ago, they________better health.[ ]
A. are enjoying
B. have been enjoying
C. could have enjoyed
D. had enjoyed
进行美的创造应具备哪些基本条件?