A:物质与意识不可分
B:物质与意识同等重要
C:思维与存在具有同一性
D:思维是对存在的正确反映
听下面一段对话,回答下列三个小题。
下列各项中属于生态系统的是:
—I've decided to quit this job,but I'm afraid I won't be able to find a better one.
—________.You never know until you try.