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，如The foreign minister’s visit can be taken as one more indicator that the relationships between the two countries are improving．(外长的访问可以被看作是又一个信号，说明两国关系在改善)。
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