造纸术的发明来源于（）A.人类的需求 B.技术试验 C.观察日常生活 D.收集信息和

下列离子方程式正确的是[ ]

A．氯气通入冷水中：Cl₂＋H₂OCl^－＋ClO^－＋2H^＋

B．氨气通入醋酸溶液中：CH₃COOH＋NH₃===CH₃COONH₄

C．碳酸氢钙溶液中加入过量的氢氧化钠溶液：HCO₃^－＋OH^－===CO₃^2－＋H₂O

D．澄清石灰水与盐酸反应：H^＋＋OH^－===H₂O

On Jan 23, 2012, I was aboard a ship on the Yangtze River, listening to the sound of fireworks and eating plate after plate of dumplings.

On Sunday Feb 10, 2013, I was preparing to celebrate Chinese New Year again – in London’s Chinatown.

It was raining. It was cold. But ever since I left Beijing in August, I had promised myself I would celebrate Chinese New Year – if only to help with my Beijing “homesickness”.

Central London was dressed up for the occasion. There was a stage for a big fireworks display for the evening. Even so, it wasn’t like my real Beijing chunjie.

Even buying a baozi didn’t cheer me up. It cost about 10 times as much as the real thing does in Beijing and got stuck to its rain-ruined paper bag.

Cold, wet and depressed, I ran into a shop for shelter. Suddenly, there it was. Between the packets of dried meat and fish, the bags of rice and the smell of dried noodles in this little Chinese supermarket, I had found home.

An hour later, I hurried into my house with bags of frozen jiaozi, packets of sauce and a large bottle of vinegar. I boiled water, tore open the packets, grabbed my chopsticks and settled down to a feast. This, I thought, is a Happy Chinese New Year.

I even watched the fireworks on TV. After all, why face the British weather when I can bring China home in one bite?

小题1: We can conclude from the first three paragraphs that the author ______.

A．likes watching fireworks on the boat

B．misses Chinese food more than anything else

C．finds it great fun to celebrate Chinese New Year

D．misses her life in Beijing very much小题2:How did the author feel when she found some Chinese foods in a supermarket?

A．a little curious

B．rather tired

C．a bit comfortable

D．very depressed小题3:Why did the author watch the fireworks on TV?

A．She didn’t want to get wet and cold again.

B．The square is far away from where she lives.

C．She doesn’t like fireworks very much.

D．She was too hungry to go out.小题4:What is the best title of the passage?

A．Unforgettable Chunjie in Beijing

B．Wonderful Experience in Britain

C．Finding Home in London

D．Festival in London

用铅笔写字时，铅笔与纸面间的摩擦是______摩擦；自行车刹车车皮和钢圈间的摩擦是______摩擦；火车车轮和轨道间的摩擦是______摩擦；某同学用力推讲台，讲台未动，这时讲台与地面的摩擦是______摩擦．

烧伤后减少或降低败血症发生哪项措施不合适（）

A.提高病人免疫力

B.早切痂

C.有效地抗休克

D.早植皮

E.大面积烧伤创面等待自然愈合

丁日昌先后在台湾铺设安平至台湾府的电线，设立了（）电报所。

A.台南

B.安平

C.旗后

D.台北