New research（研究) about how much time people spend on their smartphones(智能手机) per day.
小题1:People cannot use the smartphones to _________________
A．read e-books
B．send text messages
C．take photos
D．play football小题2:Smartphone owner spends most of the time _______________ every day.
A．surfing on the internet
B．listening to music
C．watching videos
D．making phone calls小题3:Making phone calls with the smartphone was only the _____ most popular use.
A．first
B．sixth
C．twelfth
D．fifth
