问题
选择题
The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．
A．which
B．that
C．where
D．what
答案
答案：B
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The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．
A．which
B．that
C．where
D．what
答案：B