4．Bloodsucking bed bugs （臭虫） have made a comeback in recent years．But as victims of affection have become increasingly desperate to rid their homes of the disturbing pests，many have only done themselves more harm． Bed bugs do not transmit disease or cause illness-but the insecticides used to make them do．A total of 111illnesses associated with bed bug-related insecticides were reported in seven states between 2003and 2011，the Centers for Disease Control and Prevention （CDC） said on Thursday．Most cases of poisoning were not severe，but the data included one death． That case involved a 65-year-old woman in North Carolina who died in 2011．After she complained to her husband about bed bugs，the CDC report said，he sprayed the inside of their home，including the baseboard，walls，and the area around the bed，with the insecticide Ortho Home Defense Max．He then applied a different product，Ortho Lawn and Garden Insect Killer，to their bedding．Neither insecticide is registered for use against bed bugs，the CDC said．That day，the couple also emptied nine cans of Hot Shot Fogger in their home．Two days later，they reapplied the insecticides and released nine more cans of Hot Shot Bedbug and Insect Killer．The woman then applied the insecticide Hot Shot Bedbug and Insect Killer directly to her arms and chest，and wet her hair with it before covering her head with a plastic cap． Two days later，her husband found her．She was taken to the hospital where she remained on a ventilator （呼吸器） for nine days until she died．The woman had had a history of health problems，including kidney （肾） failure，heart disease，high blood pressure and，and depression，the CDC report said．She had been taking at least 10kinds of medicine at the time of her death． Aside from the one reported death，most other cases of poisoning were mild．Commonly reported symptoms of exposure included headache and dizziness，breathing difficulties．
41．In paragraph one，"many have only done themselves more harm"，the author means thatD． A．the bugs themselves are more harmful to the victims B．there are more and more victims of bed bugs nowadays C．more and more bed bugs have come back recently D．what victims have done is more harmful to themselves 42．The underlined word"insecticide"in Paragraph 3meansB． A．a kind of bed bug B．a kind of insect killer C．a serious illness D．a plastic cap 43．Which of the following are the reasons for the woman's death？C ①The couple applied too many insecticides in their home． ②The woman sprayed insecticides not meant for use on humans． ③The woman had a history of health problems． ④Bed bugs transmitted diseases to the old woman． A．①②③④B．①②C．①②③D．②③④ 44．The symptoms of insecticide poisoning do NOT includeA． A．kidney failure B．dizziness C．headache D．difficulty in breathing 45．What can we infer from the passage？B A．There were many deaths caused by the infection of bed bugs． B．The insecticide the husband sprayed was not for use against bed bugs． C．A large number of bed bugs were killed by the old couple． D．Many illnesses related to bed bugs were reported in America．
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