1 . Efforts have been made to prevent the________of the pandas, which makes the number of the animal increase greatly.

A．campaign

B．amazement

C．extinction

D．intelligence

2 . With a large brain, human beings beat other beings in terms of_________ (intelligent). (所给词的适当形式填空)

3 . This program was set up with the ________ of providing help for homeless people.

A．intelligence

B．intention

C．insurance

D．instrument