@@17!!12-9-1单词总数: 200， 新词: 10，时间: 50 分钟
preliminary n.初步行动，准备，初步措施 adj.初步的，开始的，预备的
May I make a preliminary remarks before we start the interview.
awkward adj.笨拙的，尴尬的
The opera war marred by an awkward aria.
reciprocal adj.相互的，互惠的，互补的 n.相互，互惠，倒数
They have reciprocal agreement to contact terrorism.
captive n.俘虏，迷恋者 adj.被俘虏的，被迷住的
Television advertisers can exploit a captive audience.
bud n.芽，花蕾 vi.发芽，萌芽 vt.使发芽
the bud of a new idea.
cord n.绳索，束缚 vt.用绳索绑
The dancer could kick over a cord four feet from the ground.
perplex v.使困惑，使复杂，使为难
When new math was introduced into schools, many parents were perplexed by it.
evaporate v.蒸发，失去水分，消失
The water soon evaporate in the sunshine.