2. 外语
  3. According to Robert Bell, if mobile phones prove to be dangerous to people’s health, Many transmitter towers were built

According to Robert Bell, if mobile phones prove to be dangerous to people’s health, Many transmitter towers were built

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问题 According to Robert Bell, if mobile phones prove to be dangerous to people’s health,
Many transmitter towers were built
选项 A、on high mountains.
B、in places suitable to the phone users.
C、in areas which can take in radiation.
D、in densely populated areas.
答案D
解析
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