下列城市中，主要产业同美国匹兹堡相似的是（ ）
A：底特律．长春
B：塔兰托．鞍山
C：休斯敦．新加坡
D：阿伯丁．大庆
“大包干，大包干，直来直去不拐弯。保证国家的，留足集体的，剩下都是自己的。”这是农民赞扬中共下列哪一选项的歌谣? （ ）
⑴Where is Jimmy?____
⑵What are the sheep doing?____
⑶What are you doing?____
⑷What is Amy doing?____
⑸Is he playing ping-pong?____
A. Yes, he is.
B. He is in the classroom.
C. She is singing and dancing.
D. I'm walking.
E. They're running on the grass.
