Only when used in the contexts of mathematics and machine languages as variables or in marketing as a trademark is it proper to use lowercase letters and punctuation like that, and even then it is done to intentionally distinguish a special use of the word apart from every...
2nd grade- s2 t e m centers s c(第二张grade- s - 2 t e m s c centers).doc,SOUTH CAROLINA SUPPORT SYSTEM INSTRUCTIONAL PLANNING GUIDE Content Area: Eighth Grade Science Recommended Days of Instruction: 2 (for this lesson only; NOT for this indicator) (o