题目内容
.（浙江卷15）. For many years, people __ electric ears. However, making them has been more difficult than predicted.
A. had dreamed of B. have dreamed of C. dreamed of D. dream of
B
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题目内容
.（浙江卷15）. For many years, people __ electric ears. However, making them has been more difficult than predicted.
A. had dreamed of B. have dreamed of C. dreamed of D. dream of
B