填空题

To solve the size problem of cell phones, scientists have been researching ______ for decades.

【参考答案】

speech-recognition systems
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单项选择题
A．A class assignment.B．A journalism class.C．The woman’s job.D．The man’s work experience.
A．A class assignment.
B．A journalism class.
C．The woman’s job.
D．The man’s work experience.
填空题
The Internet’s ______ programming isn’t suitable for mobile phones.
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