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第1题

The engineers in this lab spent several weeks _______ their plans for the new bicycle. 　A. counting B.stripping C.ela
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第2题

不能创建选区的工具是( )； [ 1 分 ] A.单行选框 B.磁性套索工具 C.文字工具 D.文字蒙版工具
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第3题

Many kinds of animals are believed to have _________ from the earth 　A. withdrawn B.vanished C.found D.hung
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第4题

The _______ work continued for more than a week but there was still no sign of the missing boy. 　A. research B.rescue
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