29. There are hopeful signs that we are shifting away from our heavy reliance on fossil fuels: more than ten times as much energy is generated through wind power now than it was in 1990 A) generated through wind power now than it was B) generated through wind power now as it was C) generated through wind power now as was the case D) now generated through wind power as it was E) now generated through wind power than was the case Ans:C Mine:B(为什么不能用it指代energy呢?)
47. So-called green taxes, which exact a price for the use of polluting or nonrenewable fuels, are having a positive effect on the environmental and natural resource base of countries as varied as China, the Netherlands, and Hungary. A as varied as B as varied as are C as varied as those of D that are as varied as E that are varied as are Ans:A mine: B (补出来助动词不是更好吗?) 62. Because she knew many of the leaders of colonial America and the American Revolution personally, Mercy Otis Warren was continually at or near the center of political events from 1765 to 1789, a vantage point combining with her talent for writing to make her one of the most valuable historians of the ear(B?) (a) a vantage point combining with her talent for writing to make (b) a vantage point, when combined with her talent for writing, that made (c) a vantage point that combined with her talent for writing, and it made (d) and this vantage point, which combined with her talent for writing to make (e) and this vantage point, combined with her talent for writing, made
Ans:E
mine: B(我也承认E没有错,但是B错在哪里呢?)
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