15. Which of the following statements is TRUE according to the passage?
(A) There is trouble brewing when your waist measures 35 inches or less.
(B) Metabolic fitness might prevent people from having heart disease.
(C) Moderate drinkers may be the most likely to develop Metabolic Syndrome.
(D) Moderate caffeine consumption seems to be harmful for most people.

Questions 16~20
World prehistory is written from data recovered from thousands of archaeological sites, places where traces of human activity are to be found. Sites are normally identified through the presence of manufactured tools.
Archaeological sites are most commonly classified by the activity that occurred there. Habitation sites are places where people lived and carried out a wide range of different activities. Most prehistoric sites come under this category, but habitation sites can vary from a small open campsite through rockshelters and caves, to large accumulations of shellfish remains (shell middens). Village habitation sites may consist of a small accumulation of occupation deposit and mud hut fragments, huge earthen mounds, or communes of stone buildings or entire buried cities. Each presents its own special excavation problems.
Burial sites provide a wealth of information on the prehistoric past. Grinning skeletons are very much part of popular archaeological legend, and human remains are common finds in the archaeological record. The earliest deliberate human burials are between fifty and seventy thousand years old. Individual burials are found in habitation sites, but often the inhabitants designated a special area for a cemetery. This cemetery could be a communal burial place where everyone was buried regardless of social status. Other burial sites, like the Shang royal cemeteries in China, were reserved for nobility alone. Parts of a cemetery were sometimes reserved for certain special individuals in society such as clan leaders or priests. The patterning of grave goods in a cemetery can provide information about intangible aspects of human society such as religious beliefs or social organization. So can the pattern of deposition of the burials, their orientation in their graves, even family grouping. Sometimes physical anthropologists can detect biological similarities between different skeletons that may reflect close family, or other, ties.
Quarry sites are places where people mined prized raw materials such as obsidian (a volcanic glass used for fine knives and mirrors) or copper. Excavations at such sites yield roughed out blanks of stone, or metal ingots, as well as finished products ready for trading elsewhere. Such objects were bartered widely in prehistoric times.
Art sites such as the cave of Altamira in northern Spain, or Lascaux in southwestern France, are commonplace in some areas of the world, noticeably southern Africa and parts of North America. Many are caves and rockshelters where prehistoric people painted or engraved game animals, scenes of daily life, or religious symbols. Some French art sites are at least fifteen thousand years old.