题目

Secret codes (密码) keep messages private. Banks, companies, and government agencies use secret codes in doing business, especially when information is sent by computer.People have used secret codes for thousands of years. 【1】Code breaking never lags (落后) far behind code making. The science of creating and reading coded messages is called cryptography.There are three main types of cryptography. 【2】For example, the first letters of ＂My elephant eats too many eels＂ spell out the hidden message ＂Meet me.＂【3】You might represent each letter with a number, for example. Let—Could you tell me ?—Of course.A、where’s there a good place to eatB、where there’s a good place to eatC、where is a good place to eat