11.
(A) contagious
(B) chronic
(C) diagnostic
(D) tedious

 We all know that too much stress is not good for our health, but too little is not ideal, either.(壓力積累過多不健康 但太少亦是如此)While __11__ stress can be dangerous to the body, short-term(短期的) stress is actually healthy.

       Short-term stress triggers the production of protective chemicals in our body and strengthens the body’s defenses. __12__ our body is in a vulnerable situation, a burst of stress will quickly mobilize the body’s own repair system to defend the damaged areas. This __13__ us from physical discomfort and sickness. Small amounts of stress hormones may even sharpen our memory. A recent study found that when rats were forced to swim—an activity that places them under stress for a short while—they remembered their way through mazes far __14__ than rats that were in a relaxed state.
       The key to a healthy lifestyle is to keep our stress level __15__ . Too much stress will make us cranky and sick. Too little stress, on the other hand, will lead to boredom and low motivation.
【題組】11.

(A) contagious接觸傳染

(B) chronic慢性的(疾病) 長期的 慣常/習慣性的---answer答案

慢性壓力chronic stress是最難察覺而對身心傷害性最大的壓力，是一種長期持續的壓力感，令人覺得壓力永遠不會完結而且沒有解決方法。 

(C) diagnostic診斷 特徵

(D) tedious沉長乏味的