实验室制乙炔并检验其性质的装置如图．

德国1871年宪法规定: “在联邦议会中只要14 票反对就能阻止对宪法的修改。”当时普鲁士王国占17票，其他各邦最多6票，多数邦只有l票。此规定能够通过的主要原因是(    )

①是否好吃

②是否有毒

③是否霉变

④是否昂贵

读音选词 根据所给句意和音标，从每题ABCD四个选项中选出一个最佳答案。
There are____  / fɔ: / people in my family.
A. for      B. four    C. from     D. form
What can you see in the____ / leik / ?
A. lake     B. like    C. late     D. left
Most of my classmates ____  / raid / to school every day.
A. red      B. read     C. ride     D. rice
The train came to a____ / ʃɔp / slowly at the station.
A. shop     B. store   C. stop     D. soup
Walk ____ / θru: /the park and you will find a beautiful hotel.
A. though    B. throw    C. throat    D. through