英国历史学家霍布斯邦认为，“虽然这场双元革命——更精确地说是法国政治革命和英国工业革命——的主要载体和象征是法、英两国，但是我们不应把这场革命看成是属于这两个国家的历史事件，而应看做是一座覆盖了更广泛地区的火山的孪生喷发口”。他强调的是（   ）

下列各句中，标点符号使用正确的一项是(　　)

一个质量为4×10³kg、底面积为lm²的货物G静止于水平地面上，求：   
（1）货物的重力是多少？

（2）它对地面的压强是多少?

（3）起重机将该货物在40s内匀速提起10m时，起重机做了多少功?功率是多少? (取g=10N／kg)

    Mr. Black has a big shop in the city center. He tells all his employees (雇员) to be 1 to the buyers and he gets a lot of money.

    One day an old woman went to the shop to buy a silk blouse. When she came 2of the shop with the blouse, she left her wallet in it. A girl3and found there were nearly five hundred dollars in it. She looked around and 4 saw it. She put it into her pocket 5. Soon the old woman came back to look for it, of course she 6 . That evening Mr. Black was told about it. He was very angry and sent the girl away. Then he decided to employ7 honest man to take her place. Several young 8 came, but none of them could satisfy him.

    This morning a young man came into9 office. He asked, “Do you smoke, sir?”

    “No, sir,” answered the young man.

    “Do you drink?”

    “No, sir.”

    Mr. Black asked him the other questions, and the young man's answers satisfied him.10 he employed him, he asked him the last question, “You have no shortcoming(缺点), do you?”

    “No, I don't, sir,” said the young man. “I only like telling lies (撒谎)”.