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So many people use the cell phone so frequently every day. But【S1】______little is certain about the health effects of its use. M
So many people use the cell phone so frequently every day. But【S1】______little is certain about the health effects of its use. M
admin
2013-04-25
54
问题
So many people use the cell phone so frequently every day. But【S1】______little is certain about the health effects of its use. Manufacturers【S2】______that cell phones meet government standards for safe radio-frequency radiation emission, but enough studies are beginning to document a possible【S3】______in rare brain tumors (肿瘤), headaches and behavioral disorders in children to cause concern. So far, the evidence isn’t【S4】______on whether the use of cell phones【S5】______to any increased risk of cancer. In a new trial, researchers asked 47 volunteers to【S6】______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【S7】______to each ear. During the first scan, the devices were turned off, but for the second scan, the phone on the right ear was【S8】______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【S9】______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【S10】______a whole new avenue for scientific inquiry, though it doesn’t say anything about whether cell-phone radiation can cause cancer.
A) conclusive I) mission
B) contributes J) participate
C) derive K) particular
D) expresses L) provides
E) fixed M) regions
F) immensely N) surprisingly
G) increase O) switched
H) maintain
【S1】
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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0
大学英语四级
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