环境
参考答案:是指某一特定生物体或生物群体以外的空间,以及直接或间接影响该生物体或生物群体生存的一切事物的总和。
Simply learn to live in the present, _____ think so much about the future or the past. [ ]
A. rather than
B. other than
C. more than
D. less than
最可能的诊断
A.血气胸
B.心包填塞
C.大血管损伤
D.肺损伤
E.以上均不正确