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　　813.The question of whether to divest themselves of stock in companies that do business in South Africa is particularly troublesome for the nation’s 116 private Black colleges because their economic bases are often more fragile than most predominantly White colleges. (A) than (B) than those of (C) than is so of (D) compared to (E) compared to those of the key:B
　　817.The report on the gross national product—the nation’s total production of goods and services—showed that second-quarter inflation was somewhat lower than a previous estimation and the savings rate slightly higher. (A) a previous estimation and the savings rate slightly higher (B) a previous estimation and with a slightly higher savings rate (C) a previous estimate and that the savings rate is slightly higher (D) previously estimated and a slightly higher savings rate (E) previously estimated and that the savings rate was slightly higher
　　the key:E 824.The rules that govern political contributions are less stringent in local elections than they are in national elections because they typically involve smaller amounts of money and present less opportunity for abuse. (A) The rules that govern political contributions are less stringent in local elections than they are in national elections because they typically involve smaller amounts of money and present less opportunity for abuse. (B) Because they typically involve smaller amounts of money and present less opportunity for abuse, the rules that govern political contributions are less stringent in local elections than the rules are less stringent in local elections than the rules are in national elections.
　　(C) The rules that govern political contributions are less stringent in local elections than national elections because they typically involve smaller amounts of money and present less opportunity for abuse. (D) Because local elections typically involve smaller amounts of money and present less opportunity for abuse than national elections, the rules that govern local political contributions are less stringent than national contributions. (E) The rules that govern political contributions are less stringent in local elections than they are in national elections because local elections typically involve smaller amounts of money and present less opportunity for abuse. the key:E