Body language refers to expressions and body movements. It is an important way of communication apart from__20__. A smile and handshake show welcome. Nodding the head means agreement, while shaking it means disagreement.__ 21__, because of some cultural differences, the same body movement may have different meanings in different cultures. For example, it is a good manner to___22_ close to his friend for an Arab when they are talking, but for English people, they don't like to be close to one another.__23__, we should remember that effective communication is about what we want to express. So, __24__ use different means of communication together.