A．economical
B．medical
C．political
D．mathematical
A．Evidence is now being collected to fight against text messaging.
B．Bus drivers and train drivers are forbidden to text messages.
C．Some laws about text messaging have been put into effect in America.
D．Some actions have been applied to solve the trouble caused by text messaging.
A．far more
B．much
C．a lot of
D．much more
A．under
B．below
C．with
D．over
A．not so many as
B．as many as
C．much more than
D．much less than
