By the early 1950s, American companies started producing washing machines with a spin dry feature， and this replaced the old wringer, which, while drying the clothes, would remove the buttons or cause accidents involving the hair and hands.In 1957, the first washing machine with five plus buttons was introduced. These controlled the wash temperature, rinse temperature and spin speed.

　　Slowly, more features were added, and today we have a variety of washing machines with different features and styles to help us out and make life simpler and easier.

　　本文介绍了洗衣机发展的变化过程。

　　1．According to the passage, the first

　　washing machine________.

　　A．was invented in the year 1797

　　B．was invented for a woman

　　C．worked by using a drum

　　D．was electrically powered

　　答案：A　事实细节题。根据文中第二段第一句话可知答案。

　　2．Why were the earlier washing machines heavy?

　　A．They were equipped with a cast­iron mechanism on the tub lid.

　　B．They had a metal tub and reduction gears.

　　C．They had a galvanized metal tub and an electric motor.

　　D．They had a hand­powered mechanism.

　　答案：A　事实细节题。根据文中第四段最后一句可知答案。

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