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"Mom, "said Trevor, as he watched his mother washing the old cans (罐), "why are you washing these old cans?"
"I'm getting them ready for being put into the recycling box," said Mom.
"Well, they are rubbish to us, because we don' t need them anymore. I wash the cans out so that they won't attired insects," said Mom. "We don' t use some things, but it doesn't mean they have no value. These cans can be melted (熔化) down to make new cans or other things."
"I didn't think of that," said Trevor. "Is that why you save all the cardboard(纸板) or newspapers too?"
Mom nodded, "That is also why I save all those vegetable bits, I use them all in our garden."
"Our teacher told us about projects other classes had done for Earth Day, and she asked for suggestions for our class projects. I can't think of anything. Do you have any good ideas, Mom?" asked Trevor.
Mom wiped (擦) her hands with a towel (毛巾) and thought for a few minutes. "I saw an article in a magazine about wise ideas about recycling. It must be something you will be interested in."
1．What was Trevor’s mother doing?

A．She was reading a magazine。

B．She was washing some old cans.

C．She was cooking in the kitchen。

D．She was packing some old newspapers。

2．Trevor's mother saves some things EXCEPT ________ in this passage.

A．cardboard

B．newspapers

C．vegetable bits

D．plastic bags

3．Which of the following is WRONG according to the passage?

A．We can use old cans to make new cans or other things.

B．Trevor's teacher wants to get some suggestions for her class projects.

C．Mom used a towel to dry her hands.

D．We can know the name of the magazine.

4．What will they probably do after the conversation?

A．They will write a new article.

B．They will throw the cans away.

C．They will look for the magazine.

D．They will wash more cans together.