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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Every year more than half a million American kids have drainage(排泄) tubes surgically implanted in their ears to combat persistent infections. The procedure, known as tympanostomy, may not be as (62) a...
A.
[A] feeling [C] health
B.
[B] hearing [D] memory
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
could not easily be absorbed by the human body
B.
were potentially harmful to people's health
C.
were too expensive for daily consumption
D.
could not provide any cure for vitamin deficiencies
【单选题】市场调节是指（ ）。
A.
通过制定国民经济发展方案，有目的、有计划地进行调节
B.
通过市场竞争，由价值规律自发地进行调节
C.
把市场作为基础和主要手段的资源配置方式
D.
以市场为基础，辅之以必要的宏观调控