Ⅰ.选词填空(有两词多余)
download，household，technology，system，replace，value，concern， breakthrough， engineer， simplify
1. Users can download their material to a desktop PC back in the office.
2．With the coming of modern technology, many jobs were lost.
3．An engineer is a person who repairs mechanical or electrical devices.
4．Our aim is to simplify the complex social security system.
5．The scientists are trying their best to have a breakthrough in cancer research.
6．The house now has a market value of one million pounds.
7．The present system of funding for higher education is unsatisfactory.
8．A household is all the people in a family or group who live together in a house.
