价值规律在私有制商品经济中的作用有（） A.自发地调节社会资源的配置 B.促进合理利

阅读理解。

                                             Are You Still Looking for Your Son?

      Mrs. White has a son. His name is Sam White. The young man begins to work in a post office in

a city this Autumn. He asks his mother to visit the city. The old woman is happy and catches a train.

She soon arrives in the city, but she doesn't know where the post office is. She begins to look for it,

but she can't find it. At a bus stop she asks an old man, "Excuse me, sir. How can I get to the post

office?" 

      "There are about forty post offices in our city," says the old man."Which one do you want to find?"

      The old woman gives Sam's letter to him and the old man says, "Walk along this street and take the

fourth turning on the left. His post office is just there."

       Mrs. White thanks the old man and soon finds her son. They are very happy. A week later the

woman goes to the zoo. She sees all kinds of animals. But she can't remember the way back to the post

office. At the same bus stop she meets the same old man and she asks the same question again.

      "Oh dear!" the old man says. "Are you still looking for your son?"

1. Where does Sam White work?

     ____________________________________

2. How does Mrs. White go to the city?

     ____________________________________

3. Does the old woman know how to get to her son's post office?

    ____________________________________

4. How many post offices are there in this city?

    ____________________________________

5. Does the old man think Mrs White found her son's post office?

    ____________________________________

小王在超市用24元钱买了某种品牌的牛奶若干盒．过一段时间再去该超市，发现这种牛奶进行让利销售，每盒让利0.4元，他同样用24元钱比上次多买2盒，求他第一次买了多少盒这种牛奶？

在新的历史条件下，如何使公安队伍保持公正执法是亟待解决的问题。 ( )

为保证问卷的科学性、客观性和准确性，在制作问卷时一般应遵循一些基本原则（）

A、采用通俗易懂的口语体

B、避免使用暧昧、多义的词语

C、可以适当使用主观诱导式提问

D、将调查对象容易拒绝回答的问题尽可能放在后面

简述人类历史的客观决定性与主体选择性的辩证关系。