—Tom, I hope you won’t make the mistake later.

—I swear I won’t. You know __________________.

A．A fall into a pit, a gain in your wit.

B．Adversity makes a man wise, not rich.

C．Things at the worst will mend.

D．Happy is the man who learns from the misfortunes of others.

伤寒的抗菌治疗首选

A．氟喹诺酮类

B．磺胺类

C．氯霉素

D．氨苄西林

E．利福平