题目

D     Men and women who serve in the United States armed forces are proud of the names like  doughboy and GI Joe．The names have come from the American Civil War．     After the American Civil War in the eighteen sixties，a writer in a publication called Beadle’s Monthly used the word doughboy to describe Civil War soldiers．But word expert Charles Funk says that early writer could not explain where the name started．     About twenty years later，someone did explain．She was the wife of the famous American general George Custer．Elizabeth Custer wrote that a doughboy was a图6为“我国江南丘陵某地地形结构和农业用地结构饼状图”。对比分析回答问题。 1.造成该地农业用地结构不合理的主要原因是    A.过度开垦      B.过度放牧      C.过度围垦      D.过度养殖 2.该地实现农业可持续发展的出路在于 A.缓坡退耕，发展大牧场放牧业 B.修建梯田，扩大水稻种植面积 C.全面封山育林，改善生态环境 D.调整农业结构，发展立体农业