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2011-09-09 16:22:00 来源：作文地带 双击单词自动翻译
作文地带导读：SECTION Ⅱ Time-35 minutes 26 Questions Directions: The questions in this section are based on the reasoning contained in brief statements or passages. For some questions, more than one of the choices could conceivably answer
(A) The salmon that have returned may be of a strain that is unaffected by the pollutants.
(B) The pollution may have been reduced to a level at which the salmon can survive.
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