问题
判断题
对硬度较高的水样，在加入缓冲溶液前，应先稀释水样。（）
答案
参考答案：对
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对硬度较高的水样，在加入缓冲溶液前，应先稀释水样。（）
参考答案：对
Homesick is a compound(复合的) word made up of HOME and SICK. You know what each 46 means on its own, of course. But do you know the meaning 47 they are used together? The definition(定义) of homesick is SICK FOR HOME. It means you miss your home. Now think for a minute 48 SEASICK. If you change the word HOME in the definition to the word SEA, would the definition 49 SEASICK? Does seasick mean SICK FOR SEA? It means something quite 50 . Seasick means SICK BY THE MOVEMENT ON THE SEA. When you are 51 ,the only place you want to be is at home. When you are seasick, 52 you want to be is at sea. Have you ever 53 a person being heartsick? Heartsick doesn’t mean that something is wrong with a person’s heart. People are heartsick when they are 54 deep inside as if their hearts are broken. And we also have other compound words, such as handshake and 55 . Perhaps you may write definitions for them. It must be helpful to know some thing like this in your English study.
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