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So many people use the cell phone so frequently every day. But【C1】______little is certain about the health effects of its use. M
So many people use the cell phone so frequently every day. But【C1】______little is certain about the health effects of its use. M
admin
2018-09-01
26
问题
So many people use the cell phone so frequently every day. But【C1】______little is certain about the health effects of its use. Manufacturers【C2】______that cell phones meet government standards for safe radio frequency radiation emission, but enough studies are beginning to document a possible【C3】______in rare brain tumors(肿瘤), headaches and behavioral disorders in children to cause concern. So far, the evidence isn’ t【C4】______on whether the use of cell phones【C5】______to any increased risk of cancer. In a new trial, researchers asked 47 volunteers to【C6】______in a project to measure glucose(葡萄糖)consumption in the brain by scanning the brain to see how cells use energy. For both 50 minute scans, the volunteers had a cell phone【C7】______to each ear. During the first scan, the devices were turned off but for the second scan, the phone on the right ear was【C8】______on and received a recorded message call, although the volume was muted(消音)so the noise wouldn’ t bias the results. The results of the second scan showed that the【C9】______of the brain nearest to the device had higher rates of glucose consumption than the rest of the brain. The study shows that cell phones can change brain activity, and【C10】______a whole new avenue for scientific inquiry, though it doesn’ t say anything about whether cell phone radiation can cause cancer.
[A]conclusive[B]contributes
[C]derive[D]expresses
[E]fixed[F]immensely
[G]increase[H]maintain
[I]mission[J]participate
[K]particular[L]provides
[M]regions[N]surprisingly
[O]switched
【C1】
选项
答案
N
解析
空格前面是连词But,后面是作为名词使用的little,因此空格处需要填入对整个句子进行修饰的副词。文章第一句提到很多人每天都在使用手机,后面语意一转,想要表达的意思是关于使用手机对身体健康的影响却几乎毫无定论,这一点的确出人意料。因此,空格处需要填入一个表示“出人意料”的副词,由此确定副词surprisingly为本题答案。备选词语中只有两个副词;而immensely意为“非常,极度”,与此处要表达的意思不符合,可以排除。
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