11.A red flag was placed there as a token of danger.
A. substitute
B .sign
C. proof
D. target
12.However bad the situation is , the majority is unwilling to risk change.
A. eager
B. reluctant
C. pleased
D. angry
13.It has been said that the Acts provided a new course of action and did not merely regulate or enlarge an old one.
A. control
B. limit
C. replace
D. offset
14.The secretary is expected to explore ideas for post-war reconstruction of the area.
A. investigate
B. deny
C. stress
D. create
15.The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.
A. suddenly
B. gradually
C. excessively
D. exceptionally