请把下面的英语句子译成汉语
1. All that glitters is not gold.
2. All things are difficult before they are easy.
3. In Foreign Languages Department,a checking machine is used to correct the students' test papers.
4. The most common samples of inorganic materials are the gases of the atmosphere, water, rocks, etc.
5. Karsh was praised as a master portraitist, often working in black and white, influenced by great painters of the past.