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【单选题】
若函数y=sin 4 x+cos 4 x（x∈R），则函数的最小正周期为（ ）A.
π 4
B.
π 2
C.
π
D.
2π
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【单选题】患者男性,34岁,呆坐于一旁,对医生的任何提问均不做回答,医生让其开口喝水时,患者却双唇紧闭,扭头逃避面前的杯子,该患者的症状可能是
A.
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B.
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C.
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D.
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E.
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