大学英语四级模拟试题(6)Part II Reading Comprehension(35 minutes) Directions:There are 4 passages in this part .Each passage is followed by some questions or unfinished statements . For each of them there are four choices marked A),B),C)and D).You should decided on the choice that best answers the question or completes the statement . Then mark the corresponding letter on the Answer Sheet with a single line through the centre . Questions 21 to 25 are based on the following passage: The ordinary family in colonial North America was primarily concerned with sheer physical survival and beyond that,its own economic prosperity.Thus,children were valued in terms of their productivity and they assumed the role of producer quite early .Until they fulfilled this role,their position,in the structure of the fam