流行病学研究的观察法与实验法的根本区别在于
A.设立对照组
B.不设立对照组
C.是否人为控制研究的条件
D.盲法
E.统计学检验
参考答案:C
Read and write. (请仔细观察下面的火车票、选择相关信息完成句子)
例: This ticket is for the train.
1. The train number is ___________________________.
2. The train is going to Wuhan from ___________________________.
3. The train is going to leave at _________________________.
4. The seat number is _______________________________.
5. One train ticket is ___________________ yuan.
6. I have 1000 yuan. I can buy _________________ tickets.
甲将位于该村的、在国家林业局备案受保护的宋代古树“大柏树”砍伐并变卖,得款2000元。甲的行为构成:()
A.盗窃罪
B.盗伐林木罪
C.非法采伐、毁坏国家重点保护植物罪
D.损坏文物罪