明清时期手工业进步，主要表现：一是生产工具的革新，提高了产品质量和生产效率；二是生产技术提高，增加了产品种类：三是分工日益细密，促进了地区或行业新的壮会分工：四是生产规模扩大，产量大幅度提高。

结合明清制瓷业和丝织业发展的具体史实，说明上述手工业进步的特点。

⑴How do you feel? ____                                 A. I can skip a rope.

⑵How does your grandfather feel? ____        B. My name is Jackson.

⑶What's your name? ____                              C. She's tired.

⑷How old are you? ____                                 D. I am tired.

⑸What can you do? ____                                E. I am eleven years old.

⑹How does Kitty feel?____                             F. He's tired.

①取20%白磷的乙醚溶液0.5mL，加蒸馏水60mL．

②先滴加1%氯化金水溶液0.75mL，再滴加0.1mol/L的K₂CO₃ 0.6mL，振荡变成棕红色．

③加热煮沸至溶液变成透明红色．

④分离提纯，除去无机溶质．

所得分散系中，金颗粒直径为5～12nm．

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