Inventions are good, but people should know how to use them. Take the cellphone forexample. It is a wonderful   46   with countless uses.   47   , it has changed people’slives a lot. Many cellphone users felt that it would be very hard   48   up their cellphones.More and more people ended up in the hospital   49   using their smartphones whilewalking or driving. In fact, the number of people who got hurt in this way is still increasing.Therefore, it is time to leave your cellphone at home and make yourself   50   more outdooractivities instead. Don’t make your cellphone change your life!
【題組】46.
(A) response
(B) invention
(C) perfection
(D) decoration