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  3. According to the passage, compared to 3G mobile phones, the second-generation ph

According to the passage, compared to 3G mobile phones, the second-generation ph

游客2023-10-09  33
问题 According to the passage, compared to 3G mobile phones, the second-generation phones ______. [br] We can draw the conclusion that ______.
选项 A、3G signals and current signals transfer data at the same speed
B、3G mobile phone service will not be allowed for its bad impact
C、more tests would be done to check the results of the study
D、second-generation mobile phones will take the place of 3G mobile phone
答案 C
解析
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