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Right after cell phones were invented. Before the number of cell phone users reached a critical mass When cell phone users totaled to a certain number. When the number of cell phones decreased to a certain number.
to buy mobile phones. to update regular phones. to use mobile phones less often. to stop using mobile phones.
deny the existence of mobile phone radication. develop new technology to reduce mobile phone radiation. try to prove that mobile phones are not harmful to health. hold that the amount of radiation is too small to worry about.
they’re popular. they’re cheap. they’re useful. they’re convenient
It produces electricity for electronic devices while the wearer walks. It can be used as cell phones, GPS in the military actions or field studies. It is small and convenient. It is light and easy to carry.
It had a life-taking effect because there weren't enough cell phones in use then. The increased use of cell phones then caused a "life-taking effect." Traffic fatalities increased then because the number of cell phones in use decreased. Traffic fatalities decreased then because the number of cell phones in use increased.
堵截、突破 夹攻、合击 分割、围歼 排烟、破拆 封堵、监护第二篇基础知识
he disliked using mobile phones. he was tired of talking on his mobile phone. he could’t remember simple tasks. his employer’s doctor persuaded him to.
show that talking on the phone while driving or walking in the street increases deaths of drivers and pedestrians. show that talking on the phone while driving increases pedestrian deaths. recommend that strict measures be taken to restrain cell phone use. both A and C.
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