精选优质文档-倾情为你奉上完形填空练习（10）Directions: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context. Archaeologists are scientists who search for clues that help form a clearer picture of the lives people led in the past. Archaeology is a modern science, but it has been _1_ for centuries. More than 2,400 years ago, the Greek historian Herodotus described the Egyptian pyramids and ot
