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Not having worked out the problem, leave the office.
A. so he was not allowed to B. and he didn't want to
C. the teacher couldn't make him D. he couldn't free himself to
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Every year in the United States about 200,000 people are hospitalized and 36,000 die from the flu．While colds won't kill you, they can weaken your immune(免疫的)system．We can't promise you'll never get hit with another cold or suffer the flu, but you can increase your probability of staying well in these ways．
●Wash your hands often．The Naval Health Research Center conducted a study of 40,000 people who were ordered to wash their hands five times a day．These people cut their incidence of respiratory(呼吸的)illnesses by 45 percent．
●Run your toothbrush through the microwave on high for 10 seconds to kill germs that can cause colds and other illnesses．You think it gets your teeth clean－and it does．
●Get a flu shot every fall．The Centers for Disease Control recommends flu shots for anyone 50 years old or older．Also, people who work or live with a high-risk person should ________ so they don't spread the flu．Of course, anyone who just wants to avoid the flu should also get one．
●Stop blaming yourself when things go wrong at work．Believe it or not, blaming yourself makes you more likely to catch a cold!At least, that's what researchers found when they studied more then 200 workers over three months．Researchers expect such attitudes make people more stressed on the job, and stress, as you know, can challenge your immune system．
●Leave the windows in your house open a crack in winter．Not all of them but one or two in the rooms in which you spend the most time．A bit of fresh air will do wonders for chasing out germs．
1．What's the best title of the passage?(Please answer within 10 words．)
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2．Which sentence in the passage can be replaced by the following one?
Although we can't make sure that you never get a cold or the flu, you can probably reduce the chances of catching a cold or the flu by using these ways．
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3．Please fill in the blank in the fourth paragraph to complete the sentence．(Please answer within 10 words．)
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4．What else can you suggest to avoid suffering the flu according to you own experience?(Please answer within 30 words．)
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5．Translate the underlined sentence in the fifth paragraph into Chinese．
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