2. 外语
  3. Most environmental_____—from climate changes to freshwater and forest habitat loss—have become markedly worse.

Most environmental_____—from climate changes to freshwater and forest habitat loss—have become markedly worse.

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问题 Most environmental_____—from climate changes to freshwater and forest habitat loss—have become markedly worse.
选项 A、symptoms
B、highlights
C、indicators
D、symbols
答案C
解析 四个选项的意思分别是：indicators“标识，指示物”；symptoms“(疾病的)症状”；highlights“最好的部分”；symbols“符号，象征”。句意是，许多环境指标，从气候变化到淡水和森林栖息地的损失，已经恶化，并且越来越明显。所以正确答案是C选项。
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