Many economists believe that America must replace its moribund smokestack industries with business based on new technology.

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问题 Many economists believe that America must replace its moribund smokestack industries with business based on new technology.

选项 A、obsolete
B、mordant
C、mortified
D、ousted

答案A

解析 moribund意为“濒死的,奄奄一息的,停滞不前的”。A选项:obsolete意为“过时的,废弃的”,与画线单词的意义相符,如:So much equipment becomes obsolete almost as soon as it’s made.这么多设备几乎一生产出来就会被淘汰。故选A。在其他三项中,B选项:mordant尖酸刻薄的,尖锐的;C选项:mortified感到羞辱的,窘迫的;D选项:ousted驱逐,罢黜,都与画线单词的意义不符。
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