【正文】
(Section B 3aSelf Check) Electric Alva J. Fisher invented the first electric washing machine in 1908. It was called the “Thor” and was produced by the Hurley Machine Company in Chicago. This lead to the modern washing machine. ( )1. The passage introduces two kinds of ______ to us. A. food B. machines C. inventions D. instruments ( )2. The zipper was invented in 1893 in ______. A. China B. France C. England D. America C (Section B 3aSelf Check) D ( )3. William Blackstone created a washing machine for ______. A. his wife B. his friend C. his mother D. his customers ( )4. The early version of the washing machine look