step by step 第一册 lesson 20
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（单词翻译）
Lesson 20 A Winter Adventure
Exercises:
Scene Ⅰ
1．____ When the play begins, some children are making a snowman.
2．____ They give the snowman some stones for buttons.
3．____ At that time they hear a train coming.
4．____ It's the fast train from London.
5．____ No fast train ever stops at the station.
6．____ The children ask the train to stop because there is an enormous snowdrift on the line.
Scene Ⅱ
7．____ Tony goes down the hill on his sledge1.
8．____ John and Julia are going to tell the men on the farm about the train and the snowdrift.
9．____ Mr. Barker works at the station.
10．____ Mr. Barker thinks John and Julia want to catch the train.
11．____ He asks John to telephone the next station.
12．____ Mr. Barker will go with some men to dig away the snow.
