2. 外语
  3. We are living in the midst of a great chemical experiment and some______consequences are becoming apparent to scientists.

We are living in the midst of a great chemical experiment and some______consequences are becoming apparent to scientists.

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问题 We are living in the midst of a great chemical experiment and some______consequences are becoming apparent to scientists.
选项 A、cereal
B、serial
C、series
D、serious
答案D
解析 形近词词义辨析。句意为：我们生活在一个很大的化学实验之中，并且科学家已经发现了一些严重的后果。cereal“谷类的；谷物制成的”；serial“连续的；连载的；分期偿还的”；series“系列，连续；丛书”；serious“严肃的，严重的”。根据句意，可知答案为D。
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