A security systems
B pension schemes
C transportation systems
D afterdinner speakers
E website designers
F conference venues
G training courses
H promotional packages

A．no duty
B．no-duty
C．duty-bound
D．duty-free

A. thereby gaining control of the world’s longest Pipeline
B. and then gradually declined
C. experiencing large takeovers
D. resulting in combinations of small firms
E. only to those valued at $100 million or more
F. when two or more companies get together to form one company
G. they need to merge to become more efficient and effective