2. 考研
  3. It is not clear whether the increase in reports is stemmed from greater human activity or is simply the result of more surveys.

It is not clear whether the increase in reports is stemmed from greater human activity or is simply the result of more surveys.

admin2005-07-06  99
问题 It is not clear whether the increase in reports is stemmed from greater human activity or is simply the result of more surveys.
选项 A、flows
B、comes
C、derives
D、originates
答案D
解析 stem from源于。flow流动，循环；come来；derive得到；originate源自，来自。故答案为D。
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