问题
选择题
His invention ____ of no use by the scientists of that time. [ ]
A. considered being
B. considered to be
C. was considered to be
D. was considered being
答案
答案：C
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His invention ____ of no use by the scientists of that time. [ ]
A. considered being
B. considered to be
C. was considered to be
D. was considered being
答案：C
