It is Sunday today.Anna goes shopping with her mother. She wants her mother to buy a new coat for her. In Hongxing Shop, she finds a green coat. She tries it on. It’s too small. She wants a big one, but the big one is not green. Anna doesn’t like other colors.“Let’s go to another(另外的)  shop to have a look.”her mother says. Then they go to Jiajiale Shop. The shop is big and they see many kinds of coats in different colors and sizes(尺码). Anna tries on a green one. It looks nice on her. So they take it for forty-five yuan.

根据短文内容，选择正确答案。

小题1:Anna goes shopping with her ____.

A．mother

B．father

C．friends

D．sister小题2:Anna wants a new ____.

A．shirt

B．skirt

C．coat

D．dress小题3:The green coat is too ____ for Anna is Hongxing Shop.

A．long

B．big

C．short

D．small小题4:____ is Anna’s favorite color.

A．Blue

B．Green

C．Red

D．Yellow小题5:Anna’s new coat is ____ yuan.

A．40

B．45

C．50

D．55

烟气分析仪表“CEMS”主要有哪些作用？