【单选题】While having lunch with a friend recently, we got into a _____ that is pretty frequent in China about morning greeting.
【单选题】In order to ________ the disease, the first thing we should do is to do research about it and find out a satisfactory cure.
【简答题】Who is the fax sent to? It is sent to
【单选题】We should do more such exercises in the future,I think,_____ those we did yesterday.
【判断题】Silence refers the study of nonverbal communication sent by the eyes.
【单选题】We must put _____ into practice.
【简答题】细胞和组织的酸性物质或结构与硷性染料亲合力强者,称();而硷性物质或结构与酸性染料亲合力强者,称();若与两种染料的亲合力均不强者,称()。
【判断题】表面活性剂具有“两亲性”,但并非所有具“两亲性”的物质都可作表面活性剂来使用。