题目

Johnny Smith was a good math student at a high school. He loved his computer. He came home early every day, then he worked with it till midnight. But Johnny was not a good English student, not good at all. He got an F in his English class. One day after school Johnny joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and the grades in English. He found his English grade. An F! Johnny changed his English grade from an F to A. Johnny' parents looke阅读分析材料，并据图回答下列问题。目前，土地退化是我国面临的主要生态环境问题之一。其中土地荒漠化面积已达267.4万平方千米,防治土地退化已成为我国生态环境建设的重要任务。图甲为从内蒙古东部到新疆自然景观变化示意图。（1）将下列各项正确地与图乙中的甲、乙、丙、丁对应,并将各项前的代号填写在下面的空格内（每个代号限填一次）。A. 年降水量多且多暴雨 B. 流水作用为主C. 年降水量少且不稳定 D. 风力作用为主甲 乙 丙 丁 。（2）我国西北地区在防治土地荒漠化方面可采取的措施有： 、 、 。（3）与新疆地区有关的能源跨区域调配工程是 工程。