The passage gives an overview of the effects of global warming on the United States. Higher temperatures in the United States h

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问题 The passage gives an overview of the effects of global warming on the United States.
Higher temperatures in the United States have encouraged disease-carrying organisms which spread ______ such as malaria.

选项

答案infectious diseases

解析 Higher temperatures in the United States have encouraged disease-carrying organisms which spread _______ such as malaria.同汇线索为disease-carrying organisms,malaria,因为跟疾病有关,则定位到小标题Health Risks段落首句。
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