题目

下列关于各种材料的认识正确的是（） A . 合金的熔点比其成分金属高 B . 涤纶、羊毛和棉花都是天然纤维 C . 玻璃钢属于复合材料，其强度相当于钢 D . 在潮湿的空气中铝制品比铁制品更易生锈 答案：CPeople should be warned against using mobile phones outdoors in stormy weather because they may “be struck by lightning”, according to doctors.Three experts have described how a teenage girl was struck by lightning while using her phone in a large London park. The girl, aged 15, recovered, but a year later, was still wheelchair-bound and found to be suffering complex physical and emotional problems.The girl also had a perforate eardrum（打孔耳膜）on the side where she had been holding the mobile phone. She was having general recovery in Northwick Park Hospital, Middlesex.Swinda Esprit, a senior house offi­cer, said that while the brain and muscle damage was similar to that of many lightning victims—who can experience heart attacks on being struck— the ear problems were not.She said that the damages were particularly relevant for people who might be involved in less seri­ous lightning incidents, who might other­wise recover, but would never get their full hearing back if struck while on the phone.“We were shocked by the damage, which is why we wanted to draw attention to it,” Dr Esprit said. “A year on and she still was suffering these difficult hearing.”They added that three other cases had been reported in newspapers in China, South Korea, and Malaysia. In the Malaysian case, a sales executive was killed by lightning while talking on his phone during a thun­derstorm near Kuala Lumpur“All these events resulted in death,” the doctors wrote. “This rare phe­nomenon is a public health issue, and edu­cation is necessary to stress the risk.”The Australian Lightning Protection Standard recommends that metallic objects, including cordless or mobile phones, should not be carried out­doors during thunderstorms. However, “the United States National Weather Service says on its website that both are safe to use “because there is no direct path between you and the lightening”.Paul Taylor, of “the Met Office”, said the ear injuries were a consequence of mobile phones being metal, and not related to radio waves.Mr. Taylor said that mobile phones should be treated as another piece of metal, similar to carrying coins or wearing rings, and people need to be warned against the possi­ble danger1.What do we know about the teenage girl?A.She was struck by lightning at schoolB.She completely recovered from being struckC.She still suffered from mental problemsD.She had to press her ear all day2.It can be inferred that damage done by lightening while using mobile phones ______A.is mainly in the brain and muscle of the victimsB.can be healed quickly except for heart attacksC.is less serious because the victims can usually recoverD.is more serious than that when one is not using a mobile phone3.Why did doctors stress the risk about using phones outside in lightening?A.Because more people are faced with itB.Because some deaths have been causedC.Because lightning is harmful for the brainD.Because a teenage girl got killed4.We can infer from the last three paragraphs that ______A.both cordless and mobile phones are safe to use outside in lightningB.there is no direct connection between lightning and ear injuries at allC.opinions differ as to whether it is safe to use mobiles phones in lightningD.ear injuries are the result of carrying coins or wearing rings in lightning5.The purpose in writing this passage is ______A.to draw attention to the risk of using mobile phones in lighteningB.to focus on various damages done to lightning victimsC.to tell us the news that a teenage girl was struck by lightningD.to stress the danger of making phone calls in lightning