濒临亚洲的大洋，按顺时针方向依次是（    ）

①H₂SO₄（aq）+2NaOH（aq）=Na₂SO₄（aq）+2H₂O（l）

②H₂SO₄（aq）+Ba（OH）₂（aq）=BaSO₄（aq）+2H₂O（l）

③NH₃•H₂O（aq）+HCl=NH₄Cl（aq）+H₂O（l）

④NH₃•H₂O（aq）+CH₃COOH（aq）=CH₃COONH₄（aq）+H₂O（l）

其中反应热为57.3kJ/mol的是（   ）

北京中关村是我国最早建立高新技术产业开发试验区，其发展最重要的条件是（    ）

_____ people are crazy about buying what they like on Nov. 11 online shopping carnival.

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    One day, a poor boy was selling goods from door to door to pay for his tuition fees (学费). He was hungry. He d____he would ask for a meal at the next house. However, he lost heart w____ a lovely young woman opened the door. He asked for a drink of water and the woman agreed. She thought he looked hungry, so she b____ him a large glass of milk. He drank it slowly, and then asked, “How much do I owe (欠) you ?”“You owe me nothing, ” she r____ . “Mother has taught us never to accept pay for a kindness.”He said, “Then I thank you from my heart.”
    Years later, that young woman become seriously i____.The local doctors all f____  to cure her. They finally sent her to the big city, where they called in specialists (专家) to study her rare disease. Dr. Howard, who o____ got a large glass of milk and a meal from the young woman, was called in for the treatment. He went down the hall of the hospital to her room when he heard the name of the town she came from. D____  in his doctor’s uniform, he went in to see her. He recognized (认出) her quickly. He made up his mind to do his best to save her life and pay special a____ to the case. After a long struggle, the battle (战役) was won. The woman n____  these words when she paid the pill: “ Paid in full with one glass of milk… Dr. Howard Kelly..”