清末民初山西有一首歌谣：破戏台，烂秀才，小足板子洋烟袋；火车站，德律风（指电话），大足板子毕业生。这反映出当地（ ） ①传统习俗受到
A．《物质结构与性质》 （1）前三周期元素中第一电离能最小的是 _______ (填元素符号)，其基态原子的电子排布式为 _______ 。第
Some experts think that language learning is much ___ for children as their tongues are more flexible. A. easy B. easier
已知可简写为。降冰片烯的分子结构可表示为：（1）降冰片烯的分子式为__________。（2）降冰片烯的一种同分异构体（含有一个六元环的单环化合物）
Every student in our class were out except ________ , because we had something else to do. A. Li Ping and I B. Li Ping and me C. I and Li Ping D. me and Li Ping
向盛有I2水溶液的试管中，再加四氯化碳振荡，静置后观察到的现象是（ ） A. 上层橙红色，下层接近无色 B. 均匀、透明、紫红色 C. 均匀、透明、
Tom is newspapers. His mother is TV and his brother is a film. A. reading; watching; seeing B. reading; watching; watching C. seeing; watching; seeing D. watching; seeing; reading
