28. When business is ______, there is usually an obvious increase in unemployment.      
    A. degraded   B. depressed   C. reduced   D. lessened

<depress>
depress  v.使沮丧, 使萧条
depression  沮丧, 萧条, 低洼地带
</depress>

<degrade>
degrade  v.(使)降级, (使)堕落
</degrade>

<reduce>
reduce  vt.减少, 缩小
induce  诱惑, 劝诱
produce  生产
deduce  推断, 推论, 演绎出
educate  教育
education  n.教育
introduce  介绍
</reduce>

<lessen>
lessen  减少, 变得更小
enrich  使丰富, 使充实
</lessen>

<recession>
recession  （经济）不景气
</recession>

<redundant>
redundant  冗余的
</redundant>