Question 16 is based on the passage you have just heard.

    Body language, especially gestures, varies among cultures. For example, a nod of the head means "yes" to most of us. (16) But in Bulgaria and Greece a nod means "no" and a shake of the head means "yes". Likewise, a sign for OK, forming a circle with our forefinger and thumb, means zero in France and money in Japan. (17) Waving or pointing to an Arab business person would be considered rude because that is how Arabs call their dogs over. Folded arms signal pride in Finland, but disrespect in Fiji. The number of bows that the Japanese exchange on greeting each other, as well as the length and the depth of the bows, signals the social status each party feels towards the other. Italians might think you're bored unless you use a lot of gestures during discussions. (18) Many American men sit with their legs crossed with one ankle resting over the opposite knee. However, this would be considered an insult in Muslim countries, where one would never show the sole of the foot to a guest. Likewise, Americans consider eye contact very important, often not trusting someone who is afraid to look you in the eye. But in Japan and many Latin American countries, keeping the eyes lowered is a sign of respect. To look upon firmly in the eye is considered a sign of ill breeding and is felt to be annoying.

(16). What gesture do Bulgarians and Greeks use to express negative responses?

解析: A。本题为细节题。问题为：保加利亚人和希腊人用什么手势来表达负面反应？根据原文“But in Bulgaria and Greece a nod means "no" and a shake of the head means "yes".”可知在保加利亚和希腊，点头代表“不”，故正确答案选A。