B
Narrator(旁白)：Today,we are going to perform a play in total darkness. In our play,David is blind and Cassandra is wearing eye patches(眼罩)for a day to experience the life of the blind people.
Scene 1 On a busy street
Cassandra：David? David...Ump! I've bumped into a rubbish bin.
David：Follow my voice.
Cassandra：There are too many cars! Isn't it dangerous? What if I get hurt?
David：Relax. We're going to listen for the signal(信号). It's a chirping(鸣叫)noise. Do you hear it? There's one at every zebra crossing. It tells blind people when it's safe to cross. Let's go!

Scene 2 In the supermarket
David：When we're blind,we mainly depend on three senses：smell,touch and hearing.
Cassandra：Wow,I'm starting to notice sounds I didn't notice before. This is so amazing!
David：Yeah! Today I'm buying some vegetables and some tinned tuna(罐装金枪鱼). So,guess what kind of vegetable we are close to?
Cassandra：I can tell I'm very close to the onions because I can smell them. Am I right?
David：Yes! You're so clever. Let's get some onions. Now let's go and find the tuna.
Cassandra：But there are too many kinds of tinned food. How will we know which ones are tuna?
David：There are always people around to help out. Let's go.

Scene 3 In the supermarket
...
( )4. The play is mainly about ______.
A. two blind persons' unusual experience B. how a person became blind
C. what blind people always do D. what it is like to be blind
( )5. From Scene 1 to Scene 2,how did Cassandra's feelings change?
A. Worried→excited. B. Relaxed→nervous.
C. Calm→excited. D. Happy→regretful.
( )6. What will Scene 3 probably be about?
A. Cassandra and David buying some drinks.
B. Cassandra and David buying some beef.
C. Cassandra and David asking for help.
D. Cassandra and David paying the bills.