C

I began as a (91) ___________machine in 1642. It took nearly two hundred years (92) ___________I was built as an analytical machine. I became a “universal machine” in 1936 to (93) ___________any mathematical problem. I was very big at one time. However, as time (94),___________,I was made smaller and smaller. I was given a family (95) ___________by a network in the early 1960s. I was able to (96) ___________my knowledge with others (97) ___________the World Wide Web.

I have been widely used in many fields, such as in communication, (98) ___________,trade and medical (99) ___________.I have also been put into robots and space rockets to (100) ___________the Moon and Mars. I’m glad I am a devoted friend and helper of the human race.