四、閱讀理解(共15小題;每題2分，共30分。)

　　閱讀下列短文，然后根據(jù)短文的內(nèi)容從每小題的四個選擇項中選出最佳的一項，并把它前面的大寫字母填入左邊的括弧里。

　　A

　　First there was learning. This has always been an important part of human life. By imitating their parents， children learned to hunt， to make tools， and to take care of themselves and others.

　　Next came education. This was possible only after people developed language. Then adults could explain how to do things. They could talk about traditions， beliefs， and ceremonies of the group. Still， education was oral. Children could learn only what their teachers could remember.

　　Finally， schools were created. They came into being because writing was invented. The first system for writing appeared about 3，500 B.C. in Sumeria， a land that is now Iraq. The Sumerians also invented a system for calculating with numbers. About 500 years later， the Egyptians discovered writing and calculation， too. And shortly after that， both the Sumerians and the Egyptians started schools. Being able to read and write they allowed people to learn anything that could be recorded. But the early systems were complicated. Children couldn‘t learn them just by watching. That’s why schools became a necessity.