GRE阅读练习每日一篇(十二)_GRE阅读

GRE阅读练习每日一篇(十二)

　　Assets and liabilities that determine the net worth of a corporation

　　High grades and low grades made by a student whose average remains about the same from term to term

　　20. According to the passage, which of the following has the LEAST effect on the amount of ozone at a given location in the upper atmosphere?

　　Latitude

　　Weather

　　Season

　　Ground-level ozone

　　Solar activity

　　21. The author provides information that answers which of the following questions?

　　I. What is the average thickness of the stratospheric ozone layer?

　　II. Why does increased exposure to ultraviolet radiation damage many living organisms?

　　III. What is the role of oxygen in the production of stratospheric zone?

　　I only

　　II only

　　III only

　　I and II

　　II and III

　　22. In explaining what determines the amount of ozone in the stratosphere, the author describes natural processes that form

　　an interactive relationship

　　a reductive system

　　a linear progression

　　a set of randomly occurring phenomena

　　a set of sporadically recurring events

　　Feelings of hopelessness among medieval workers trapped in the poverty cycle gradually lessened as it became possible for women s labor to supplement a family s money income by more than pennies. By 1300, women spinners could be found working on their own for wealthy sponsors, even after the introduction in Italy and France of prohibition against advancing money for supplies to women spinners. Historians have usually interpreted this prohibition simply as evidence of women s economic subjection, since it obliged them to turn to usurers; however, it was also almost certainly a response to a trend toward differential reward for women s higher skill. Yarn can be spun irregularly and lumpily, but perfectly smooth yarn is worth more. Working for merchant entrepreneurs on time rates, women had been paid hardly more than children; working as entrepreneurs themselves and producing good work by the piece, they could break into the rational system of differential rewards.