2. 外语
  3. As intriguing as these results are, much remains unclear about the impact of low doses of a low doses of alcohol ______ system.

As intriguing as these results are, much remains unclear about the impact of low doses of a low doses of alcohol ______ system.

admin2012-05-18  90
问题 As intriguing as these results are, much remains unclear about the impact of low doses of a low doses of alcohol ______ system.
选项 A、immune
B、vulnerable
C、chronic
D、susceptible
答案A
解析 语义连贯题。酒精作用的是人的免疫系统，答案选[A]immune“免疫的”。[B]vulnerable“易受伤害的”、[C]chronic“(疾病)慢性的，(人)久病的”和[D]susceptible“容易被影响的”都不能和system形成合理的搭配。
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大学英语六级

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