Many plant and animal species are now on the__________________ of extinction.
A.danger
B.margin
C.border
D.verge

The two men looked so alike that it was impossible to____________ between them.
A.discriminate
B.discern
C.distinguish
D.differ

She is wearing a/an ______ ring.
A.gold nice expensive
B.nice expensive gold
C.nice gold expensive
D.expensive nice gold

Watson ran into the Sierra because _________.
A.he wanted to stop the ship’s crew from whaling
B.he was impatient with the government’s actions
C.he wanted to protect the whales from the whalers
D.All of the above are correct

The International Organizations are going to be in a temporary way in the country.
A.soak
B.permanent
C.guess
D.complicated

Nancy concurred with her boss about the new direction the company was taking.
A.agreed
B.surrendered
C.disagreed
D.confessed

S. Mayo Hospital in New Orleans was so named in recognition of Dr. Mayo's outstanding humanitarianism.
A.widespread
B.exhaustive
C.remarkable
D.charitable

A.employee
B.computer
C.committee
D.scientific

A.financial
B.encourage
C.average
D.departure

A.cheat
B.mean
C.creation
D.increase