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  3. Anxiety is a normal response to physical danger, so it is very useful and very p

Anxiety is a normal response to physical danger, so it is very useful and very p

游客2024-06-16  13
问题 Anxiety is a normal response to physical danger, so it is very useful and very popular among people. [br] Now in the United States, about 19 million people are suffering from mental illness.
选项 A、Y
B、N
C、NG
答案 B
解析 定位到文章第三段；此段由一个复合句构成，首先，主句主语是Anxiety disorder，is是系动词，the most common mental illness in the US是表语，表语后是which引导的定语从句。此处which指代the most common mental illness，即anxiety disorder，而不是笼统的精神疾病。理清句子结构是解题关键。
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