________（49）A.He says there is emerging evidence
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________（49）
A.He says there is emerging evidence that children absorb low-level radiation at a rate more than three times that of adults.
B.By the year 2000 it is estimated that Australia will have 8 million mobile phones;nearly one for every two people.
C."If mobile phones are found to be dangerous,they should carry a warning label until proper shields can be devised,"he said.
D.Then who finances the research?
E.For example,Telstra,Optus and Vodaphone build their towers where it is geographically suitable to them and disregard the need of the community.
F. The conclusion is that mobile phones bring more harm than benefit.
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答案：A
本题考查的是对上下文之间意义关系的理解。此空前一句说的是Robert Bell建议政府应该禁止在儿童比例高的地区（如学校操场、儿童医疗中心、居住小区等）的500 米半径范围内建造发射塔。选项A说明为什么要这样做，因此选A。