1 . The company ______ as a failure ______ into a major chemical manufacturer in the past decade.

A．regarded; evolved	B．regarded; has evolved
C．was regarded; evolved	D．has been regarded; has evolved

2 . As more people live closer and closer together, particularly ______ urbanization (城市化), risks ______ with fire increase.

A．as a result of; associated	B．because of; concerning
C．as a result; associating	D．because; concerned

3 . It can be hard for you to imagine what trouble I have had _______ the problems _______ in the meeting held last week.

A．to deal with; refer to	B．dealing with; referring to
C．dealing with; referred to	D．to deal with; referred to