After they ________ the first super computers in the 1940s, scientists and engineers began to develop ways to create networks.
举一反三
- People began to find that ______. A: computers may get tired after performing too many operations B: computers could organize information in limited ways C: computers are able to carry out tasks quickly with the help of man D: computers could store information, and organize it as well
- To protect the environment, scientists and engineers are researching ways to ( ) electricity more cheaply from such renewable energy sources as the wind and the sun.
- China's civil aviation began to develop rapidly in the 1990s.
- ______ was one of the first of the nontraditional forms to develop immediately after World War II.
- When did people try to develop ways of showing motion with photographs（） A: Before the twentieth century. B: Early in the beginning of the twentieth century. C: At the dawn of the first day of the twentieth century. D: After the dawn of the twentieth century.