题目

71 (spend) too much time online can increase your risk of catching 72 cold or the flu，scientists have warned. Those with greater levels of Internet addiction are more likely to give in to illness 73 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(细菌)played a role. Past studies also 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. 答案：71. Spending 72. a 73. than 74. in 75. weakened/weaker 76. themselves 77 have found 78. worse 79. behavio(u)rs 80. Which

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