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【小题1】(spend) too much time online can increase your risk of catching 【小题2】cold or flu，scientists have warned.
Those with greater levels of Internet addiction are 【小题3】(likely) to give in to illness than those who spend fewer hours online.
Researchers believe the reason lies 【小题4】the fact that people with an Internet addiction are more lonely，and as a result have 【小题5】(weak) immune (免疫) systems.
They said the lack of interaction with other people and less time spent outside exposing 【小题6】(them) to germs (细菌) played a role.
Also, recent studies 【小题7】(find) people who spend more time online experience greater sleep problem, have 【小题8】(bad) eating habits, do less exercise and tend to smoke and drink more alcohol.
These 【小题9】(behave) can harm the ir immune system and increase chances of getting diseases.
Professor Phil Read said, We found that the impact of the Internet on people's health was independent of other factors, like depression, sleep problem, and loneliness, 【小题10】are associated with high levels of Internet use and also with poor health.