The government is trying to reduce people’s fear they are likely to be affected by the nu

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A. whether
B. what
(答案→)C. that
D. how
解析： 本题考查同位语从句。that they are likely to be affected by the nuclear radiation是来解释说明名词fear。句意：政府试图减少人们的恐惧，他们有可能受到核辐射的影响。故选C。