B

　　Nowadays, mobile phones are becoming very important in our daily life, but you may want to throw your mobile phone away after reading this. Because tests have shown every mobile phone averagely carries 18 times more potentially harmful bacteria than a toilet handle. One of the phones in the test had such high levels of bacteria that it could have given its owner a serious stomach upset.

　　While the bacteria are not immediately harmful, high levels of bacteria indicate poor personal hygiene (卫生)

　　and act as a breeding (交配繁殖)

　　ground for other bugs.

　　The findings from a sample of 30 phones by Which? magazine suggest 14.7 million of the 63 million mobile phones in use in the UK today could be potential health risk.

　　The most unhygienic phones had more than ten times the acceptable level of bacteria and seven of them were above the level. The worst phone also had 39 times the safe level of enterobacteria(肠道菌),

　　a group of bacteria that live in the lower intestines(肠) of humans and animals and include bugs such as Salmonella(沙门氏菌) .

　　Other bacteria including food poisoning bugs were found on the phones but they are at safe levels.

　　Which? researcher Ceri Stanaway said,

　　“Most phones didn't have any immediately harmful bacteria that would make you sick right away but they were dirtier than they could be, so everyone should pay attention to keeping your mobile phone hygienic when you use it”．

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