2、下列离子方程式中书写正确的是　　　　　　　　　　　　　

A、向Ba(OH)₂溶液中滴加NaHSO₄溶液至恰好为中性：Ba²⁺+OH^-+H⁺+SO=BaSO₄↓+H₂0

B、NH₄HCO₃溶液与过量KOH浓溶液共热：NH+OH^- = NH₃↑+H₂0

C、稀硝酸和过量的铁屑反应：3Fe+8H⁺+2NO=3Fe³⁺+2NO↑+4H₂O

D、KI溶液与H₂SO₄酸化的H₂O₂溶液混合：2I^-+H₂O₂+2H⁺=2H₂O+I₂

1、在pH=13的无色溶液中，可以大量共存的一组离子是

A、NH、NO、K⁺、SO　　　 B、CO、NO、HCO、Na⁺

C、Na⁺、CIO^-、AlO、NO　　 D、CrO、K⁺、Na⁺、SO

假定你是李华，准备参加学校举办的主题为“健康成长”的英语作文比赛。请按要求写一篇短文，主要内容包括：

1. 乐观的人生态度；

2.　 努力学习；

3.　 参加体育锻炼。

注意：1.词数150左右；　 2.可以适当增加细节，以使行文连贯；　 3.开头已为你写好。

We all want to grow up happily and healthily, and for this goal we must do several things.

73 making preparations for

74 of which the windows

75 of her failure

作文：One possible version:

We all want to grow up happily and healthily, and for this goal we must do several things.

Firstly, we should develop a good attitude to life. Life consists of not only sunshine but also hard times. We should be brave in front of difficulties. Secondly, we must study hard because knowledge is power. If we have the power, we can help to build our country and enjoy life better. In order to study well, we need to do sports so that we can keep fit. We can go running, play ball games or simply take a walk after a day’s study. If we do those things well, we will be able to grow up happily and healthily.

75. The personnel department informed her that she had failed in the job interview.( 改为同义句)

　→　She was informed __________________________________in the job interview.

74. He lives in a house whose windows face south. ( 改为同义句)

　 →He lives in a house_________________________________ face south.

73.He is preparing for the coming exam these days. ( 用prepare 的名词改写)

　 → He is _________________________________　these days.

72. If everything is considered, his plan seems to be more workable.( 改为同义句)

　 → _________________________________, his plan seems to be more workable

71. Though I'm weak I will make the effort.( 改为倒装句)

　 　→ ________________________________ ,I will make the effort.