题目

—Are you sure you can do well in the final exam?—_____________, I’ve got everything ready.A. No, I’m not sure                                B. It’s hard to sayC. Yes, I think so                                  D. I hope not 答案：C. 考查日常英语。从I’ve got everything ready可知选择C答案。一艘科学考察船计划9月份从A点（20°N、20°E）出发，到达与A点纬度相同，经线正好相对的B点进行科学考察，则B点的经度是 [     ]A．160°WB．20°WC．160°ED．20°E