有机溶剂萃取
参考答案：
用与水互不相溶的有机溶剂作为萃取剂，利用生物物质在两相中分配系数的差异进行分离的过程。
看图完成对话，在横线上填入适当的词、短语或句子。
A: ___1___. Is there a post office near here?
B: Yes. ____2_ __ New Street and turn right on Bridge Street. You pass a library ___3_ your
right. The post office is_ __4___the restaurant and it is next to the supermarket.
A: Thank you very much. Goodbye.
B: ___5___ . Bye-bye.
具有责任感是心理健康的标志之一。[ ]
