下列各句中，加线的成语使用恰当的一项是（    ）

    Food is very important. Everyone needs to 1 well if he or she wants to have a strong body. Our minds also need a kind of food.

    This kind of food is 2.We begin to get knowledge even when we are very young. Small children are 3 in everything around them.They learn 4 while they are watching and listening.When they are getting older，they begin to 5 story books，science books...，anything they like.When they find something new，they love to ask questions and 6 to find out the answers.

    What is the best 7 to get knowledge?If we learn 8 ourselves，we will get the most knowledge.If we are 9 getting answers from others and do not ask why，we will never learn well.When we study in the right way，we will learn more and understand 10.

A: ____

B: I'm looking for a CD for my friend's birthday.

A: ____ This CD is very popular among young people now.

B: Let me see. It is rock music. I don't think she will like it.

A: ____

B: She likes music that is quiet and smooth.

A: Oh, I see. Please have a look at this CD. The music is soft and also popular.

B: That's great. I'd like to listen to the music. ____

A: OK. Wait a moment. I'm sorry this one is broken.

B: Do you have any more?

A: No, we don't. But we will have more in a few days. Please leave your phone number. ____

B: Thank you very much. My phone number is 819-9476.

A: You're welcome. See you.

B: See you.

绿色植物的光合作用为地球上其他生物提供了____、____、____.