The immobile adolescent with a recent fractured femur suddenly complains chest pain, dyspnea, diaphoresis, and tachycardia. Which of the following would the nurse suspect

A．Atelectasis.

B．Pneumonia.

C．Pulmonary edema.

D．Pulmonary emboli.

按照义务教育法规定，适龄儿童、少年因疾病或者特殊情况，需要延缓入学或者免予入学的，由谁申请？由谁批准？