Question 20 is based on the passage you have just heard.

​​​​​​​     Almost everyone suffers from a headache occasionally. But some people suffer from repeated, frequent headaches. (19) A headache is important because it can be the first warning of a serious condition that could probably be controlled if discovered early. If a person removes the warning, day after day, with a pain-killer, he or she may pass the point of easy control. The professional name for covering up a symptom is “masking.” (20) A headache specialist once said, “Masking symptoms is not the best way of treatment. Sometimes it is wiser to stand still than to advance in darkness.” A headache often interferes needlessly with normal, happy living. The employee with a headache does less work. In a flash of temper he or she may upset fellow workers or customers, causing a direct or indirect loss to the organization. The mother with a headache suffers and disturbs the family. She upsets her husband and children. Rest, quiet and fresh air stop many common headaches. (21) Lying down and possibly falling asleep may help. One can often handle tension headaches by rubbing and pressing back neck muscles. Heat from an electric pad or a warm bath can also help. Because hunger may be overlooked as a headache source, one must make a habit of regular meals. If a meal must be postponed for more than an hour, a snack helps to avoid a hunger headache.

(20).What do specialists suggest we do with headaches?

解析：细节理解题。题目为：专家建议我们如何对待头痛？根据原文中A headache specialist once said,＂Masking symptoms is not the best way of treatment. Sometimes it is wiser to stand still than to advance in darkness. 大意为，掩盖症状并不是治疗的最佳方法，有时候坚持一下比迈入更可怕的阶段会更明智些。可见专家对掩盖症状这种做法是不赞成的，也就是说根据专家所言，我们不应该掩盖症状，D项Avoid masking symptoms （避免掩盖症状）与此内容相符。