阅读理解。

                                                A Road Sign

     A man was traveling on his way to another town when he saw a road sign (路标) which read,

"NO THROUGH WAY. PLEASE GO ANOTHER WAY." He looked ahead and saw nothing wrong

at all. He decided to go on, thinking the sign was a kind of joke. After a while he saw a broken bridge

and had to turn back. When he came to the sign again on the road he saw these words on its back side.

"WELCOME BACK, YOU FOOL!"

1. The road sign was put up on the road in order to _____.

A. make people know that the bridge ahead was being rebuilt

B. tell people to be careful while crossing

C. tell people to go another way

2. Why did the man decide to go on when he saw the road sign? Because _____.

A. he didn't see the words on the road sign

B. he thought the sign was a kind of joke

C. there was another way ahead

3. The man had to turn back because _____.

A. he saw the words on the sign's back side

B. he didn't want to go to that town any more

C. the bridge was broken

4. What's on the road sign's back side?

A. NOTHING.

B. NO THROUGH WAY PLEASE GO ANOTHER WAY.

C. WELCOME BACK, YOU FOOL! 

5. Which of the following is wrong?

A. The words on the sign were written in capital letters.

B. There was something wrong with the bridge.

C. The road sign was a kind of joke.