单选题 While other animals use a limited range of sounds or signals to communicate, humans have developed complex systems of language that are used to ensure survival, to express ideas and emotions, to tell stories and remember the past. and to negotiate with one another. Oral (spoken) language is a feature of every human society or culture. Experts studying ancient cultures have several theories about how human language began and developed. The earliest language systems probably combined vocal(声音的) sounds with hand or body signals to express messages. Some words may be similar to natural sounds. Others may have come from expressions of emotion, such as laughter or crying. Language, some theorists believe, is a result of group activities, such as working together or dancing.
Over 6000 languages and major dialects are spoken in the world today. As some languages grow, others disappear. Languages that grow also develop and change due to class, profession, age group, and other social forces. The Latin language is no longer spoken but survives in written form. Hebrew is an ancient language that became extinct(已灭绝的). but has now been brought back to life and is spoken today. Others, such as the ancient languages of native peoples in Central and South America, the Pacific Islands, and some of the Native American peoples of North America, which had no written form, have been lost as the speakers died. Today anthropologists are trying to record and preserve ancient languages that are still spoken in remote areas or by the last remaining people in a culture.

单选题 What is NOT the characteristic of the earliest language systems?

单选题 While other animals use a limited range of sounds or signals to communicate, humans have developed complex systems of language in order ______.

单选题 What is the main idea of the second paragraph?

单选题 Which of the following language has disappeared?

单选题 What is the best title of the passage?