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