2. 外语
  3. Adam Rappoport has the same familiarity with a keyboard as well as the touch-tone pad on the phone. To solve the size problem o

Adam Rappoport has the same familiarity with a keyboard as well as the touch-tone pad on the phone. To solve the size problem o

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问题 Adam Rappoport has the same familiarity with a keyboard as well as the touch-tone pad on the phone.
To solve the size problem of cell phones, scientists have been researching ______ for decades.
选项
答案speech-recognition systems
解析 本题涉及到手机的尺寸问题，从而锁定Can the cell phone perform many of the function of the PC?部分。该部分第三段前两句提到：Yet mobile-phone innovators are working to solve that tricky problem，too．Scientists are continuing decades of research into speech-recognition systems…。第一句中的that tricky problem正是题干中所说的size problem of cell phones，根据第二句即可得到答案：speech- recognition systems。
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