下图所示的实验操作，不能达到相应目的是（　　）

读某城市规划图，该城市规划的企业布局，较为合理的是（    ）

 There isn’t ______ juice in the fridge. Would you like ______ coffee?

根据句意和汉语注释，写出单词的正确形式。
____ When the doctor came, the victim has already stopped _______ (呼吸).
____ _______  (立即), the enemy disappeared on the early foggy morning.
____ It's not surprising to see so many _______ (推销员) in such a big electrical shop in China.
____ As we know, air _______ (污染) might cause many serious diseases.

科学家做过如下实验，将深色桦尺蛾和浅色桦尺蛾分别进行标记，然后放养于不同的地点，一段时间后，将所释放的深色桦尺蛾和浅色桦尺蛾尽量收回，统计数目，结果如下表：