Half the world's rain forests have already been ___________.
A.endangered
B.eroded
C.found
D.destroyed

Endangered animals should be bred in _______ areas.
A.conservative
B.conservable
C.conservation
D.conservance

Acid rain has caused severe _______ on the hillside.
A.erosion
B.pollution
C.destruction
D.floods

Can you please tell me some information_____to the job?
A.that indicates
B.that are relating
C.that relate
D.relating

A large hydroelectric __________was built on the River Danube.
A.power
B.dam
C.bank
D.wall

_________ take the train instead of the bus? It's faster.
A.How about
B.Let's
C.Why don't
D.Why not

We are now facing the possible________ of several rare species.
A.danger
B.variety
C.existence
D.disappearance

Would you like lunch with us?' `Yes, I'd love to.'
A.have
B.to have
C.having
D.had

A.eliminate
B.elephant
C.endanger
D.erosion

A.pollute
B.species
C.accept
D.receipt