According to the passage, the use of mobile phone is unlikely to cause ______.

A．the research in Finland found that mobile phone radiation will not affect one's brain
B．mobile phone radiation can cause decreased activity in hundreds of protein in human cells
C．increased protein activity might cause cells to expand
D．Lszczynski' s wife and children will still use mobile phone after his research

A．shippers will be charged less without a rival railroad
B．there will soon be only railroad company nationwide
C．overcharged shippers are unlikely to appeal for rate relief
D．a government board ensures fair play in railway business