According to the passage cell phones were launche
According to the passage, cell phones were launched_______ 查看材料
A.in the late 1970s
B.between 1955 and 1960
C.in the late 1955s
D.in the early 1990s
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:B
事实细节题。根据选项数字定位到第二段最后一句“从20世纪80年代初手机进人市场以来…”。其中“launched”与“introduced”表示意思一致。故选B。
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