A:氯气、活性炭都能使品红溶液褪色,它们的漂白原理相同
B:SiO2是酸性氧化物,所以SiO2能与NaOH溶液反应
C:足量Cu与一定量浓硝酸充分反应得到的气体是纯净物
D:NH3的水溶液可以导电,所以NH3是电解质
John's never flown to Canada, _______?
It's Sunday afternoon. Michael's family have a picnic under (在……下面) a big tree. The woman in a blue T-shirt and white pants is Michael's mother. ⑴She is thirty-two. She is a teacher in No. 2 high School. She is cooking now. The man with a guitar is Michael's father. He is thirty-four years old. ⑵He teaches in the same school as Michael's mother. He is a teacher. Michael's little sister likes singing, but she isn't singing now. ⑶“为什么不和我一起去放风筝呢?”Michael问他的小妹妹。⑷Then she flies a kite with her brother. What a happy family!
正面 左面 上面