法律、行政法规规定或者当事人约定采用书面形式订立合同,当事人未采用书面形式,则该合同不成立
参考答案:错
—What's the matter, Lily?
—Oh, I feel sorry to hear more than _______ people lost their lives in the earthquake in Sichuan. [ ]
A. sixty thousands of
B. sixty thousand
C. sixty thousand of
D. thousand of
有关COPD的外因,错误的是()
A.长期吸烟与慢支发生有密切关系
B.感染是慢支发生与发展的重要因素
C.理化因素的慢性刺激为诱因
D.气候寒冷为发作的重要诱因
E.发病与过敏因素无关