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Detailed studies of the tribe by the food scientists at Athe University of Londo
Detailed studies of the tribe by the food scientists at Athe University of Londo
游客
2025-03-30
17
管理
问题
Detailed studies of the tribe by the food scientists at A
the
University of London showed that gathering is a more productive source of food B
than is hunting
. An hour of hunting yields C
on
average about 100 edible calories D
as
an hour of gathering produces 240.
选项
A、
B、
C、
D、
答案
D
解析
根据上下文意思,“An hour of hunting yields on average about…produces 240”表示一种对比关系,引出相反或不同的事实,因此应将as改为whereas或while。
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