There once was a frog. He lived in a well (井). He   ▲   got out of the well, so he thought the sky was as big as the mouth of the well. 

    One day, a crow came to the well. He saw the frog and said, “Frog, let’s have a talk.” Then the frog asked, “What do you do?” “I fly in the sky,” the crow said. The frog felt surprised (吃惊的) and said, “The sky is only as big as the mouth of the well. How do you fly in the sky?” The crow said, “The sky is very big. You always stay in the well, so you don’t know the world is big.” The frog said, “I don’t believe.” But the crow said, “You can come out and have a look by yourself (你自己).”

    So the frog came out of the well. He was very surprised at how big the world was!

1.Which word can be put in the “ ▲ ”?

A often

B usually

C never

D sometimes

解析：选C。C 推理判断题。根据后一句“so he thought the sky was as big as the mouth of the well”所以他认为天空和井口一样大；以及第二段的“You always stay in the well”你总是呆在井里，可知这只青蛙从来没有从井里出来过。故选C。

2.What did the crow want to do?

A Get into the well.

B Talk with the frog.

C Help the frog fly.

D Come out of the well.

解析：选B。B 细节理解题。根据第二段的“One day, a crow came to the well. He saw the frog and said, ‘Frog, let’s have a talk.’”一天，一只乌鸦来到井边。他看见青蛙就说：“青蛙，我们谈谈吧。”可知，乌鸦想和青蛙交谈。故选B。

3.The frog thought the sky was _________

A small

B big

C blue

D high

解析：选A。A 细节理解题。根据第二段的“The frog felt surprised (吃惊的) and said, ‘The sky is only as big as the mouth of the well. How do you fly in the sky?’”青蛙惊讶地说：“天空只有井口那么大。你怎么在天上飞呢?”可知，青蛙认为天空很小。故选A。

4.The title (标题) of the passage can be _________.

A The Crow in the Sky

B The Frog in the Sky

C The Crow in a Well

D The Frog in a Well

解析：选D。D 主旨大意题。结合全文内容可知，本文主要描述了一只长期住在井底的青蛙的所见，以及后来他的改变。因此“井底之蛙”符合文章大意。故选D。