单项选择题：土地供给的( )是引起土地所有权垄断和土地经营权垄断的基本前提。 A．稀缺性 B

题型：阅读理解

阅读理解，判断正（T）误（F）。

Do you have a goal in life? What is it? Do you want to become a writer, singer or just become a rich

person?

A recent survey shows that in modern society, most people pick up practical goals, such as "making

money to buy a house and a car", "to improve one's life quality" or "finding a good job".

Wang You worked in a small firm in Nanjing. The job was good and he didn't have to work for extra

hours. However, he felt the work was not exciting at all and that life was boring. So he gave up his job

and went to Beijing in February, 2008. When he arrived in Beijing, he set his new goal as finding a good

job.

Nowadays more and more people want to live a better life. This fact shows that the society is making

progress and people's life goals have become more practical. One researcher says, "Everybody has his

or her own life goal, which will surely be different from person to person. If one is poor, one's life goal

will be to earn more money; if one doesn't have a diploma, studying hard to get a diploma will become

his life goal; and if one doesn't have love, his life goal will be to look for it. But if one has no life goal, he

will idle away (虚度) his lifetime. "

( )1. All the people pick up practical goals in modern society.

( )2. Wang You gave up his job because he had to work for extra hours.

( )3. Our society is making progress and people's life goals have become more practical now.

( )4. Everyone has his or her own life goal, and these goals are almost the same.

( )5. We all should have our own life goals, or we will idle away our lifetime.

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题型：填空题

如图所示，在常温下容器A中盛有500mL蒸馏水，在容器B中盛有500ml 1mol/L的盐酸，在烧瓶C和D中充满二氧化氮气体，并用导管将它们连通。向A容器中加入50g硝酸铵晶体，小心搅拌，使其迅速溶解；向B中加入10g苛性钠固体，小心搅拌也使其迅速溶解，随着A、B中固体物质的溶解，烧瓶C和D中气体的颜色变化是_________________（提示：2NO₂(g)N₂O₄(g) △H ＝－56．9kJ/mol）