有A、B、C、D四个中等城市，它们水源、能源充足，交通便利。它们相对地理位置如下图所示。各城市各有其特点：A城是风光秀丽，人口稠密，土地供应紧张的旅游城市，环保要求高，近郊有丰富的FeS₂资源；B城是一个新兴的工业城市，已建有大型磷肥厂，土地供应充足。C城近郊有丰富的磷灰石资源，工业发达，但使用H₂SO₄的工业不多，土地供应充足；D城是一个古老的城市，它的周围是重要的农业区，是大量肥料的集散地。现拟建年产1×10⁵ t硫酸的工厂，厂址应选在  (  )。

    I'm living in a busy city. There are too many people and too many cars. Too many people and too many cars cause too crowded traffics. At the same time, the cars gives out much smog (烟雾), especially (尤其是) at rush hours (高峰期). The smog pollutes (污染) the city terribly. The problem is becoming more and more serious.

We should do something to prevent it.

    First, I think we should have more police officers at the busy crossings. They can stop the traffic jams (阻塞). Second, we should not make more parking garages (停车位) for cars. When people think that it's easy to park in cities, more people will drive to work and it will make the traffic more crowded. Third, we should make it more expensive for drivers to drive ears to cities. Then more people will leave their cars for their bikes. Fourth, we should encourage people to take a bus to work. Fifth, we should build special ways for bikes so that more people will go to work by bike instead of by bus or in a car. Finally, we should spend more on the public transportation(公共交通.). For example, we can build more underground lines. Of course, we can also do many other things to improve our traffic.

建国初期的土地改革和1978年以来的家庭联产承包责任制的共同之处是（    ）

①实行土地公有制 ②解放了农村生产力 ③提高了农民生产积极性 ④推动农村经济的发展

阅读以下材料：

材料一：“苏湖熟，天下足。”（谚语）

材料二：南宋诗人陆游在一篇文章中说：“朝廷在故都时，实仰东南财赋。”

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