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  3. Read the following text. Choose the best

Read the following text. Choose the best

考试题库2022-08-02  9
问题 Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points)　As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember 　1　 we put the keys just a moment ago, or an old acquaintance’s name, or the name of an old band we used to love. As the brain 　2　 , we refer to these occurrences as “senior moments.” 　3　 seemingly innocent, this loss of mental focus can potentially have a(n) 　4　 impact on our professional, social, and personal 　5　.　Neuroscientists, experts who study the nervous system, are increasingly showing that there’s actually a lot that can be done. It 　6　 out that the brain needs exercise in much the same way our muscles do, and the right mental 　7　 can significantly improve our basic cognitive 　8　. Thinking is essentially a 　9　 of making connections in the brain. To a certain extent, our ability to 　10　 in making the connections that drive intelligence is inherited. 　11　, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate 　12　 mental effort.　Now, a new Web-based company has taken it a step 　13　 and developed the first “brain training program” designed to actually help people improve and regain their mental 　14　.　The Web-based program 　15　 you to systematically improve your memory and attention skills. The program keeps 　16　 of your progress and provides detailed feedback 　17　 your performance and improvement. Most importantly, it 　18　 modifies and enhances the games you play to 　19　 on the strengths you are developing—much like a(n) 　20　 exercise routine requires you to increase resistance and vary your muscle use.3．______A. IfB. UnlessC. OnceD. While
选项 A. If
B. Unless
C. Once
D. While
答案 D
解析 本题测试考生根据上下文判断逻辑关系的能力。空格填入引导状语的连词，表明该状语与后面所说的逻辑关系。空格后的语义是“看似无害（seemingly innocent）”，空格后说到“这种精神损害可能会对职业、人际和个人的某方面有……影响”。由此对比可知，前后之前的逻辑关系是转折对比，故D项while“虽然，尽管”符合上下文语义。if（如果）和unless（除非）都是引导条件状语从句的连词；once（一旦）是引导时间状语从句的连词。
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