干燥的氨气可与 ____等液体物质（至少选填两种）一起组装成功喷泉实验；向烧杯中的FeSO₄溶液中滴加NaOH溶液，然后烧杯静置在空气中，可观察到的现象是 ____；有关反应的化学方程式或离子方程式为：①____　② ____；向新制氯水中滴加AgNO₃溶液，现象是 ____，相应的离子方程式为①____　② ____

生物体的生命活动离不开水，下列关于水的叙述，错误的是（    ）

有关创建有文化品位的城乡环境的叙述，不正确的是（    ）

选择适当的选项补全对话。

A. Is he friendly? B. Yes, you're right. C. A boy or a girl? D. Who's he? E. No. He has glasses and his shoes are blue.

John: Hello, Sarah! I have a new friend.
Sarah: ____
John: A boy.
Sarah: ____
John: He is tall and thin. He has short hair.
Sarah: ____
John: Yes, and he is nice, too.
Sarah: Is he Mike?
John: ____
Sarah: I know. He is Peter. He is near the door.
John: ____

．______, the pay isn’t attractive enough, though the job itself is quite interesting.