71    (spend)toomuchtimeonlinecanincreaseyourriskofcat...

問題詳情：

  71     (spend) too much time online can increase your risk of catching  72    cold or flu，scientists have warned.

Those with greater levels of Internet addiction are    73   (likely) to give in to illness than those who spend fewer hours online.

Researchers believe the reason lies   74     the fact that people with an Internet addiction are more lonely，and as a result have   75   (weak) immune(免疫)systems.

They said the lack of interaction with other people and less time spent outside exposing   76   (them) to germs(細菌)played a role.

Also, recent studies   77   (find) people who spend more time online experience greater sleep problem, have   78   (bad) eating habits, do less exercise and tend to smoke and drink more alcohol.

These   79    (behave) can harm their 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，  80    are associated with high levels of Internet use and also with poor health.

【回答】

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