ACCORDING TO THE AUTHOR, THE IMPRACTICABILITY OF USING COAL, OIL S...

50. According to the author, the impracticability of using coal, oil shale and coal tars as sources of energy is due to _a. their time consuming b. their money consumingc. the scarcity of source d. the lack of technologyQUESTION 51-55: Read the following passage carefully and answer the questions that follow by circling letter A, B, C or D as the correct answer and then mark your choice on the answer sheet.As far back as 700 BC, men have talked about children being cared for by wolves. Romulus and Remus, the legendary twin founders of Rome, were supposed to have been cared for by wolves. It is believed that a she- wolf loses her litter, she seeks a human child to take its place.This seemingly preposterous idea did not become credible until the late nneteenth centery when a French doctor actually found a naked ten- year-old boy wandering in the woods. He did not walk erectly, could not speak intelligibly, nor could he relate to people. He only growled and started at them. Finally, the doctor won the boy’s confidence and began to work with him. After many long years of devoted and patient instruction, the doctor was able to get the boy to clothe and feed himself, recognize and utter a number of sounds well as write letters and form words.