问题 写作题

书面表达(满分25分)

有一场神奇的“价值拍卖会”,你可以拍下自己最想要的东西。竞拍内容有:爱心、梦想、名牌大学录取通知书、聪明、快乐、诚信、自由、权利、友情、金钱等.那么你会为什么而举牌?

写作要求:

1.请选出你最想得到的三样东西,并阐明你选择的理由。

2.字数120左右(不含幵头语)

附:1. 拍卖会--auction    2.录取通知书--- admission notice

Different people may bid for different things.

答案

Different people may bid for different things. As for me, I want dream, friendship and an admission notice to a famous university most.

Dreams would be on the top of my list. Only by pursuing our dreams can we enjoy a meaningful and fulfilled life. Money can buy a comfortable life, but without dreams, even a millionaire would find his life boring.

A person without friends can never be happy. Our life is full of joys and sorrows, which we need people to share with. Faced with difficulties, we need friends to give us comfort and help. Just as a saying goes, “A friend in need is a friend indeed”. Friendship can help us through ups and downs of life, so friendship would be in my list as well.

After working hard for so many years, I deserve to go to a good university, because being admitted to a famous university can help me live up to my parents’ expectations and bring me a bright future.

问答题

29日晚6时许,京沪高速淮安段,一辆槽罐车与一辆迎面驶来的解放牌大货车相撞后翻倒在地,槽罐车司机逃逸,槽罐车上满载的约32吨液态氯气快速泄漏.与事故发生地相距300米的地方,是一个村庄,住有1万名村民.到3月30日下午5时,中毒死亡者达27人,送医院治疗285人.相关链接:氯气为黄绿色气体,有强烈刺激性气味,在常温下,1体积的水能溶解2体积的氯气,氯气密度为3.21g/L(空气为1.293g/L),高压下可呈液态,氯气与碱反应生成次氯酸盐(ClO为次氯酸根)和金属氯化物等.据专家介绍,氯气被人吸入后,可迅速附着于呼吸道黏膜,之后可以导致人体支气管痉挛、支气管炎、支气管周围水肿、充血和坏死.呼吸道黏膜受刺激,可造成局部平滑肌痉挛,再加上黏膜充血、水肿及灼伤,可引起严重的通气障碍.人吸入的浓度为每立方米2.5mg的氯气时,就会死亡.回答下列问题

(1)氯气的物理性质是: _________

(2)氯气的化学性质是: _________

(3)为什么储氯罐内温度升高会引起爆炸?(用分子的观点说明)

(4)储氯罐发生的爆炸是物理变化,还是化学变化?为什么?

(5)根据储氯罐发生泄漏时的实际状况请回答:你如何迅速、安全地逃离事故现场?

(6)氯气泄漏发生后,一直在现场待命的消防特勤队立即用高压水网(火碱液NaOH)连续高空稀释,在较短时间内有效控制了氯气扩散.请写出该反映的化学方程式: _________

解答题