21.The Bushmen are _______ hunters even though their weapons are primitive.
A.favourite B.original C.sufficient D.expert
22.Before he left the White House, the president made a _______ speech.
A.quaarel B.symbol C.automobile D.farewell
23.The local government has begun a _______ in this city to cut down the traffic accidents.
A.protest B.punishment C.protection D.project
24.It is highly _______ that he come here tomorrow to join us.
A.desirable B.doubtful C.good D.wanted
25.A new idea began to _______ from his mind when he was on his way back home.
A.emerge B.output C.starve D.tend
21.D 22.D 23.D 24.A 25.A