从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21. This event not only raised     of world hunger, but also raised lots of money to help starving children.
    A. information    B. knowledge      C. instruction    D. awareness
22. The passengers were lucky to escape          when their train went off the tracks last night.
    A. injury         B. damage         C. wound          D. hurt