下列说法正确的是（   ）

阅读理解。选出正确的答案。

    George was a quiet, serious young man. He had been studying very hard for one year, and when he passed all his exams, his friend Jim went to give him his congratulations and then had an earnest talk with him.

  “You've never been to a dance, George.” he said. “It's boring always studying and never enjoying oneself. Come out with me this evening.”

  “Maybe you're right, Jim,” replied George after a moment of hesitation.

    So they went to a dance and had a very good time. But George drank more than he was used to, and by midnight Jim became worried about him, so he said, “now we'll walk home in the cool air.”

    On their way home, they came to a bridge. George looked down at the river below very carefully, the stars were reflected on its surface.

 “What are those lights down there?” George asked.

 “They're the stars, George,” Jim answered.

 “The stars?” George said. “Well, then, they should be above in the sky. How did I get so high up here? They are now at my foot!”

将下列陈述句改成反问句

①淮南柑桔一种到淮北，就又小又苦，还是因为水土不同。

②我们不能随意砍伐树木，破坏绿化。