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there were quite a few mosquitoes in Mark Twain’ s room 3. All the people present laughed heartily because ________. A. the mosquitoes were very clever and they didn’ t e into the wrong room B. the mosquitoes knew Mark Twain’ s room number C. Mark Twain gave the waiters some nice presents D. Mark Twain made a joke 4. From the story we know ________. A. no mosquitoes troubled Mark Twain in the night B. the owner of the hotel told the waiters to look after Mark Twain well at night C. Mark Twain didn’ t have a good rest that night D. there were not mosquitoes in the hotel any longer 5. Which of the following is NOT true? A. Mark Twain liked to tell interesting stories to make people laugh. B. Mark Twain went to the small town for his writing. C. He slept well because the mosquitoes didn’ t e into his room. D. The waiters felt sorry, for there were many mosquitoes in Mark Twain’ s room. B “ Children should not be left unsupervised(無人監(jiān)督的 ) to play with a dog.” say experts in this week’ s British Medical advice is part of a review aimed at doctors who deal with dog bites. “ Dog bites and maulings are a worldwide problem, particularly in children.” write Marina Man and John year 250,000 people who have been bitten by dogs attend minor injuries and emergency units in the United Kingdom, and half of all children are reportedly bitten by dogs at some time, boys more than girls. Accurate death figures are difficult to obtain, but in the past five years, two to three cases a year have made news headlines. Based on the latest medical evidence, they advise doctors how to examine and treat a patient presenting with a dog discuss the risk of infection and when to refer to specialist travelers bitten abroad, they suggest assessing the risk of rabies(狂犬病 ). In terms of prevention, they suggest that children should be taught to treat dogs with respect,avoid direct eye contact, and not tease should be taught not to approach an unfamiliar dog; play with any dog unless under close supervision; run or scream in the presence of a dog;pet a dog without first letting it sniff you; or disturb a dog that is eating, sleeping, or caring for its babies. “ Dog owners also need to change their behavior, ” says Rachel Besser, a children’ s doctor and lifetime dog owner, in an article. “ It is clear that not all dog owners appreciate that children should not be left unsupervised with a dog, ” she as some parents are obliged to take parenting classes, she would like to see pulsive classes for expectant dog owners to teach them about the responsibilities of dog programs are also needed to teach children about some precautionary(預(yù)防的 ) behaviors around dogs. Finally, she would like to see animal doctors advising dog owners about bite prevention, and doctors promoting bite prevention when treating patients who have been bitten by dogs. 6. Dog biting is a problem which________. A. should be paid attention to B. only happens to a few children C. only boys may meet with D. h