2. 外语
  3. Some species disappeared or became ______ as new forms came into being that were better adapted to the Earth’s changing environm

Some species disappeared or became ______ as new forms came into being that were better adapted to the Earth’s changing environm

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问题 Some species disappeared or became ______ as new forms came into being that were better adapted to the Earth’s changing environment.
选项 A、extinguished
B、massive
C、extinct
D、feeble
答案C
解析 由并列连词or可知，空格中应填入与disappeared“消失”意思相近的词，extinct“灭绝的，绝种的”符合句子语境，故C正确。extinguished表示“(灯火、希望、热情、想法等)被熄灭的，被消灭的”，不符合本句语境；massive表示“大量的，大规模的”；feeble表示“虚弱的，脆弱的”。
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