Unit 3 Computers Reading课件 人教版必修2
Unit 3 Computers Reading课件 人教版必修2第3页

 Pre-reading: 1. Look at the pictures and the title of the reading passage. Predict what it is going to be about. 2. Look at these inventions. Can you put them in an order according to the time when they appeared? After reading the passage, check to see if you were right.

( ) analytical machine ( ) laptop ( ) calculating machine ( ) robot ( ) PC ( ) universal machine