下列哪项对于肺炎支原体肺炎的诊断意义不大
A．呼吸道症状B．胸部X线检查C．痰培养或痰涂片D．冷凝集试验E．肺炎支原体抗体检测
参考答案：C
舞蹈房长15米，宽8米．用长1.5米，宽9厘米的木地板铺地，至少要这样的木地板多少块？
The man is weak in health, and is advised by the doctor ________more exercise.
A．taking
B．should take
C．took
D．to take
