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题目内容
（伊犁师范-基础英语1）
why was the black box redesigned in 1965?
A . New materials became available by that time
B . Too much space was needed for its installation
C . The early models often got damaged in the crash
D . The early models didn.t provide the needed
A . New materials became available by that time
B . Too much space was needed for its installation
C . The early models often got damaged in the crash
D . The early models didn.t provide the needed
参考答案