gwd18-31请教

Q31:

Between 1990 and 2000 the global economy grew more than it did during the 10,000 years from the beginning of agriculture to 1950.

1. Between 1990 and 2000 the global economy grew more than it did during the 10,000 years from the beginning of agriculture         it同时指代1990与2000年间的globla economy和开始有农业后10000间的global ecnomy,我觉得不是一件事情 逻辑不清应用that来指代


2. Between 1990 and 2000 the growth of the global economy was more than that during 10,000 years, from when agriculture began应该是taht of,from when....began好象没有这种用法,需要确认一下


3. The growth of the global economy between 1990 and 2000 exceeds that which不对 had been for 10,000 years from the beginning of agriculture


4. The growth of the global economy between 1990 and 2000 exceeds what it has been for 10,000 years, from when agriculture began what it 结构笨拙,应能简则简from when....began好象没有这种用法,需要确认一下


5. The growth of the global economy between 1990 and 2000 exceeded what it did for the 10,000 years from the beginning of agriculturewhat it 结构笨拙,应能简则简   Answer: a

现在再看这题,肯定e不对,但a也不好啊

进行比较时比较类似的事情,用that/those指代,

比较相同事情用it,they指代

这条规则,想确认一下,请nn指教一下