图中①②③④代表我国四条地理分界线，读图完成下列要求。
（2）④线以北、③线以西地区重要的矿产资源有_______________（至少四种），我国地势阶梯分界线是四条线中的______。（填序号）
（3）关于图中四条界线描述正确的是_______。（填字母）
A．我国牧区都分布在①线以北地区
B．④线以北有两座核电站、两大工业区，且都临黄海
C．我国四大跨世纪工程都在②③线以东
D．②③两条线均通过大兴安岭
（4）关于D区域，下列描述正确的是_______。（填字母）
A．多外流河和咸水湖
B．没有重要的保护林
C．既有油菜产区又有甜菜产区
D．有重要的铁矿、钨矿、铝土矿
（1）B处为山地，地势高气温低；C处在大陆内部，远离海洋，降水较少
（2）石油、天然气、稀土、钾盐、镍、煤等选四个即可；①③
（3）D
（4）D
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| Please Help Ladies and gentlemen, thank you very much for coming to this concert. I hope you have enjoyed the music. The purpose of this concert is to 1 money for children in Africa. Every day 2 children in Africa die because they have diseases or have not enough 3 . There are two main reasons. First, there are no jobs for the children's parents, so they have no money to buy food or 4 . Second, the governments in many African countries do not have the money to take care of poor people. Most African counties are poor. The land is not good for 5 food and the weather is also bad for farming. The organization we are trying to help. The Feed Africa Fund, 6 a lot of money every year on food for poor people in Africa. The money comes 7 people like you kind, generous people who do not want to see children die from hunger. Just one dollar can buy enough rice or corn to 8 a family of four for three days. How much do you spend on food every day? Ten dollars? Twenty dollars? I am sure you can spend a little 9 on your own food so that you have a few dollars for the Feed Africa Fund. Ladies and gentlemen, we will now take a 10 . Please be generous. Thank you. | |||
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