用英语表达怎样做FLASH CARDS?

Flashcards have a question on one side and the answer to that question on the other。You use them to quiz yourself about different things -- vocabulary,spelling,history,whatever。You can easily make flash cards with a pen and a bunch of 3-by-5-inch index cards。On each card,write a question you need to study on one side,then the answer on the other。They're handy。You can shove them in a pocket and study whenever you have free time。And when you've mastered all the questions,you can flip them over and quiz yourself on the answers