БИОЛОГИ : строение клетки

http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookCELL1.html

Components of Cells  

Cell Membrane (also known as plasma membrane or plasmalemma) is surrounds all cells. It: 1) separates the inner parts of the cell from the outer environment; and 2) acts as a selectively permeable barrier to allow certain chemicals, namely water, to pass and others

Very Helpful -Intonation, Grammar, Conv., etc.

http://www.5minuteenglish.com/

http://www.5minuteenglish.com/grammar.htm - Grammar

http://www.5minuteenglish.com/reading.htm - Reading

http://www.5minuteenglish.com/listening.htm - Listening

http://www.5minuteenglish.com/pronunciation.htm -Pronunciation

http://www.5minuteenglish.com/vocabulary.htm - Vocabulary

Grammar "Do & Make"

Grammar Resource

http://DailyDoseOfEnglish.com

Just for Fun!!!

A very interesting person

Economics and Banking system

http://englishconversations.org/?p=8002