下列各组地理区域中，属于描述自然区域的一组是：

设月球绕地球运动的周期为27天，则地球的同步卫星到地球中心的距离r与月球中心到地球中心的距离R之比 为（）

阅读理解

    About five hundred years ago, an earthquake happened in a small village. Luckily for them, nothing was destroyed and no one was hurt. But a huge stone fell from a nearby mountain and stopped in the middle of the road.

    When the earthquake stopped, many people came to the road and saw the stone. Some of the strongest men tried to lift the stone out of the road. But they couldn't move it. They tried to push it but failed. They tried to pull it with ropes but nothing worked.

    "Well," they said sadly, "there's nothing we can do about it. We'll have to change the way."

    At this time a boy about 12 years old said, "I think I can help you to move the stone away."

    "You?" they shouted. "What are you talking about?" The men all laughed at the boy.

    The next morning, some people came into the road. One of them shouted, "The stone is gone." More people ran out to see what had happened. It was true. The stone wasn't on the road any longer. It wasn't even near the road.

    The boy walked over to where the stone had been and said, "I buried it."

    The people looked rather surprised. "You see," he said, "I dug a deep hole next to the stone and I dug a small incline (斜坡) up to the stone and the stone rolled (滚) down into the hole itself. Then I covered it with earth."

    The villagers shouted, "Clever boy! Clever boy!" And some of them said, "Why didn't we think out this good idea?"

①我们应该告诉员工怎样参与创新，在哪个阶段参与到创新的过程中，问他们对于改进产品的想法、过程和工作流程，使他们与管理层保持________的沟通。

②如果有分手或失恋带来的苦楚，你可以找人________地诉说，比如找心理医生咨询或向最信任的挚友倾诉。

③他们不但是合伙人，更有着________、荣辱与共的亲密关系。改革开放后，他们共同办企业，更加志同道合，许多事情都能心照不宣，配合默契。