题目：
关于慢性支气管炎早期肺部X线检查的叙述，下列哪项是正确的
A．膈肌下降且变平
B．胸廓扩张，肋间隙增宽
C．无特殊异常征象
D．两肺野透亮度增加
E．两肺纹理增粗紊乱
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C解析：A preterm infant is a neonate born at less than 37 weeks' gestation regardless of what the neonate weighs. Infants weighing less than 2,500 g are described as low-birth-weight neonate. A full-term neonate can be diagnosed with intrauterine growth retardation.
