The passage gives a general description of an invasive insect, HWA. [br] Since 1

游客2023-07-31  27

问题 The passage gives a general description of an invasive insect, HWA. [br] Since 1951 the HWA has spread to more than ______ .

选项

答案 15 U.S. states

解析 根据题干中的信息词1951定位原文,在Acting Quickly下第一段可找到答案。
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