问题
选择题
| The balance of nature is _____ at times, resulting in a number of possibly unforeseen effects. |
A. confused B. troubled C. disturbed D. harmed |
答案
答案：C
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| The balance of nature is _____ at times, resulting in a number of possibly unforeseen effects. |
A. confused B. troubled C. disturbed D. harmed |
答案：C