Most insomnia is not an illness or a physical condition so much as a symptom of another problem that may simply be a reaction to certain medications, anxiety about travel, or stress before a job interview.
an illness or a physical condition so much as a symptom of another problem that may simply be a reaction to certain medications
an illness or a physical condition so much as symptomatic of another problem that may be a simple one, like a reaction caused by certain medications
so much an illness or a physical condition but a symptom of another problem that may be as simple as when certain medications cause a reaction
so much an illness or a physical condition, but it is a symptom of another problem, maybe a simple one like certain medications causing a reaction
so much an illness or a physical condition but symptomatic of another problem, maybe simply a reaction to certain medications
B. as symptomatic,like排除
D. but it is 指代不清,而且看句意,结构应该是not ... but,不是两个并列句
E. symptomatic 不平行,排除
错选了C,没看到 as simple as when,不平行,且句意:和“当xxx时”一样简单,错误
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