下列哪种肺炎可呈暴发性流行
A．肺炎支原体肺炎B．军团菌肺炎C．肺炎克雷伯杆菌肺炎D．肺炎球菌肺炎E．金葡菌肺炎
参考答案：B
______ you eat the correct foods ______ be able to keep fit and stay healthy.
A．only if; will you
B．Only if; you will
C．Unless; will you
D．Unless; you will
