1. Many old people in the cities find themselves unable to get used to the rapid ______ of city life.
A. rate B. speed C. step D. pace
2. I'm afraid this painting is not by Picasso. It's only a copy and so it's ______.
A. priceless B. invaluable C. unworthy D. worthless
3. According to the psychoanalyst Sigmund Freud, wisdom comes from the ______ of maturity.
A. fulfillment B. achievement C. establishment D. accomplishment
4. We're funding research new ______ such as law enforcement technology.
A. areas B. regions C. districts D. zones
5. He looked rather untidy as there were two buttons _____ from his coat.
A. loosing B. losing C. off D. missing