Your Health and 5 G The fifth generation technology of cellular data or 5 G，promises to bring lightning-fast data connection speeds.Much faster than Internet connections currently offered in many homes.（1） ____ However，not everyone is excited about 5 G service. （2） ____ There are even protests aimed at slowing down or even stopping companies from installing the equipment necessary for 5 G service.Why are people so worried？ To understand the possible health risks of 5 G，it is important to understand how the new service sets apart from existing 3 G and 4 G.（3） ____ 5 G uses a different part of the electromagnetic spectrum.The signals have short wavelengths measured in millimeters called millimeter waves.Millimeter waves are perfect for high-speed data but small transmitters and antennas must put up everywhere to ensure good connections.This presents a cause for concern. 5 G service means new transmitters and antennas everywhere.Certainly，it will mean that the amount of electromagnetic radiation that people are exposed to will increase.Radiation exposure sounds dangerous，but it all depends on the type of radiation，the strength and the amount of time that people are exposed to.Sunlight is a type of radiation，and exposure for too long can cause a sunburn.（4） ____ Many studies have been done to explore whether low-level exposure to radio waves，microwaves，or millimeter waves has negative health effects.So far，there is no conclusive evidence.（5） ____ However，scientists will continue to study the long-term effects of exposure to electromagnetic radiation.A.It's important to consider risks when using 5 G.B.Will this new technology bring new health risks？C.The main difference is the new frequency of the signals to transmit data.D.High-speed service has the potential to revolutionize many technologies.E.Repeated exposure over time can also lead to the likeliness of skin cancer.F.As long as producers follow safety regulations，5 G should not cause a health risk.G.Some people worry that the technology behind 5 G might present serious health risks.

（1）D.推理判断题。根据上文The fifth generation technology of cellular data or 5 G，promises to bring lightning-fast data connection speeds.Much faster than Internet connections currently offered in many homes.（第五代蜂窝数据技术有望带来闪电般的数据连接速度。比目前许多家庭提供的互联网连接快得多。）以及后文However，not everyone is excited about 5 G service.（然而，并不是所有人都对5 G服务感到兴奋。）可知，本句与上文并列，旨在说明5 G的好处：使许多技术发生革命。故D选项"高速服务有可能使许多技术发生革命"符合语境。故选D。
（2）G.推理判断题。根据后文There are even protests aimed at slowing down or even stopping companies from installing the equipment necessary for 5 G service.Why are people so worried？（甚至出现了旨在减缓甚至阻止企业安装5 G服务所需设备的抗议。为什么人们如此担心？）可知，后文提到了人们因为担心而阻止企业安装5 G服务所需设备，G选项中worry对应后文中worried。故G选项"一些人担心5 G背后的技术可能会带来严重的健康风险"符合语境。故选G。
（3）C.推理判断题。根据上文To understand the possible health risks of 5 G，it is important to understand how the new service sets apart from existing 3 G and 4 G.（要了解5 G可能带来的健康风险，重要的是要了解新服务与现有3 G和4 G的区别。）以及后文5 G uses a different part of the electromagnetic spectrum.The signals have short wavelengths measured in millimeters called millimeter waves.Millimeter waves are perfect for high-speed data but small transmitters and antennas must put up everywhere to ensure good connections.This presents a cause for concern.（ 5 G使用的是不同的电磁频谱。这些信号的波长很短，以毫米为单位，称为毫米波。毫米波非常适合高速数据传输，但必须在所有地方安装小型发射机和天线，以确保良好的连接。这引起了人们的关注。）可知，本句旨在说明5 G与现有3 G和4 G的区别在于信号的频率，故C选项"主要的区别是传输数据的信号的新频率"符合语境。故选C。
（4）E.推理判断题。根据上文5 G service means new transmitters and antennas everywhere.Certainly，it will mean that the amount of electromagnetic radiation that people are exposed to will increase.Radiation exposure sounds dangerous，but it all depends on the type of radiation，the strength and the amount of time that people are exposed to.Sunlight is a type of radiation，and exposure for too long can cause a sunburn.（ 5 G服务意味着新的发射机和天线无处不在。当然，这将意味着人们暴露在电磁辐射中的数量将增加。辐射听起来很危险，但这完全取决于辐射的类型、强度和人们暴露在辐射中的时间。阳光是一种辐射，长时间暴露在阳光下会导致晒伤。）可知，上文提到了长时间接触阳光也导致晒伤，本句为本段最后一句，应承接上文继续说明其后果。故E选项"长时间反复接触也会导致患皮肤癌的可能性"符合语境。故选E。
（5）F.推理判断题。根据上文Many studies have been done to explore whether low-level exposure to radio waves，microwaves，or millimeter waves has negative health effects.So far，there is no conclusive evidence.（已经做了许多研究来探索低水平暴露在无线电波、微波或毫米波下是否会对健康产生负面影响。到目前为止，还没有确凿的证据。）可知，上文提到没有确凿证据证明会对健康产生负面，即论述5 G对人体会不会造成健康风险的问题。故F选项"只要生产商遵守安全法规，5 G应该不会造成健康风险"符合语境。故选F。