A：沿任何一条经线北行，均能回到原地
B：通过地球表面任何一点都只有一条经线
C：全球所有的经线都不等长
D：除赤道和极点以外，相同纬度的纬线都有两条
******在青海考察时指出，三江源是国家的生命之源，对中华民族发展至关重要。实践证明，在三江源地区限制或禁止开发，不是妨碍，恰恰是有利于发展。这说明（ ）
①做好环境保护工作就解决了发展问题 ②限制资源开发有利于经济持续增长
③建设美丽中国也是在落实科学发展 ④经济建设与环境保护工作要协调发展
This is Jim’s room. It’s a nice room. Some pictures are on the wall (墙). There’s a desk and a chair in his room. There is a sofa and a bookcase, too. The desk is between (在……之间) the bed and the bookcase. His backpack and pencil case are on the desk. His pencils, pen and ruler are in the pencil case. His sofa is near the desk. His baseball is under the bed.
