单选题：According to Schwartz, what can help people know more about

题目内容：
According to Schwartz, what can help people know more about climate change? A．Taking a course on phenology.
B．Knowledge of life cycle events of plants and animals.
C．Efforts of ecologists to learn more about plant flowering.
D．Full support of citizen scientists to study climate changes.
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分类：公共英语二级  题型：单选题
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