下图是某区人大代表换届选举的流程图。下列说法正确的是（    ）

如图，AB∥CD，∠CDE=140°，则∠A的度数为（　　）

​

①羊群   撒在   雪白的   草原   大   的   一望无际   上

②菊花   盛开   秋天   着   千姿百态   的   公园里

③可以   鸟   研究   空气   资料   污染   为   可贵   的   提供

A：Parks are really important in a neighborhood. ____

B：Sounds good.What can we do?

A：Well, we can pick up garbage(垃圾)．

B：What a great idea! ____

A：Yes, let's ask them to come.We can ask the neighbors, too.

B：____

A：We should bring garbage bags and buckets(水桶)．

B：____

A：Let's volunteer on Saturday.The weather will be sunny.

B：____ 

A：Wear old clothes.We'll probably get dirty.

B：OK.I will tell the others.

A．People must keep them clean.

B．When should we volunteer?

C．What should we wear?

D．Maybe we can invite our friends to help.

E．Let's volunteer to clean up Central Park.

F．I learned a lot from the activity.

G．What should we bring?