经国际小行星命名委员会命名的“神舟星”和“杨利伟星”的轨道均处在火星和木星轨道之间，它们绕太阳沿椭圆轨道运行，其轨道参数如下表（AU是天文学中的长度单位，大约是地球到太阳的平均距离）．“神舟星”和“杨利伟星”绕太阳运行的周期分别为T₁和T₂，它们在近日点的加速度分别为a₁和a₂．则下列说法正确的是（   ）

 用分子的观点对下列现象解释错误的是（　　）

根据短文内容回答下列问题。

    Long, long ago there lived an old man. He had a very big orange tree in his garden. On the tree there were many fine oranges.

    One day the old man found one of the oranges was bigger than the others. It was as big as a watermelon. So he took the big orange to the king. The king was very happy and gave the old man a lot of money for it.

    When a rich man heard of this, he said to himself, "It is only an orange. Why did the king give him so much money? If I take my gold cup to the king, he will give me much more money for it."

    The next day when the king got the gold cup, he said to the rich man,"What a beautiful cup! I'll give you something for it. Please take the great orange."

材料一：2016年10月19日国家统计局发布了前三季国民经济的主要数据，按可比价格计算，前三季度国内生产总值同比增长6．9%，国民经济运行保持了总体平衡，稳中有进、稳中提质的发展态势。

材料二：目前，我国总体上已进入以工促农，以城带乡的发展阶段，国家的经济实力、综合国力显著增强，可以拿出更多的财力支持农业和农村发展，各级政府切实把基础设施建设和社会事业发展的重点转向农村，国家财政新增教育、卫生、文化等事业经费和固定资产投资增量主要用于农村，逐步加大政府土地出让收入用于农村的比重，通过强化各项支农惠农财税政策，包括严格执行增加投入政策，加大支农补贴力度、支持在全国范围建立农村最低生活保障制度、促进现当代农业建设等，加快社会主义新农村建设。