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The passage gives a general description of an invasive insect, HWA. [br] The Hem
The passage gives a general description of an invasive insect, HWA. [br] The Hem
游客
2023-07-31
27
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问题
The passage gives a general description of an invasive insect, HWA. [br] The Hemlock in the U.S. will be saved from HWA soon.
选项
A、Y
B、N
C、NG
答案
C
解析
文章后半部分讲到为了控制HWA,美国已在受灾部分地区投放HWA的天敌St bettles,但是在文章倒数第二段末尾指出这种方法是否有效还无法判断(too early to measure their impact),故本题表述正确与否未可知。
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