6. Computer technology will ________ a revolution in business administration.
The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.
Yifu library was named ______ a businessman devoted to China’s education.
The boy knocked down by the car stood up all by himself , _____unhurt.
——I think the book is as interesting as it is instructive.—— It could never be____.It is well worth reading.
He decided that he would drive all the way home instead of ______at a hotel for the night.A. putting down B. putting off C. putting up D putting on