在我国改革开放中，首先进行改革的是（    ）

B

    During the summer holiday, some students might have been busy with traveling, summer camps and all kinds of courses. But a special group of Chinese middle school students decided to taste the hardship of life outside school.

    Twelve students in a big city sold vegetables at a local market together. Within 12 days, they made more than 1,500 yuan.

    Among them, the oldest is 21 years old, while the youngest is just 10. They are all cousins in a big family and eight of them are from rural areas.

    “Compared to traveling, such social practice connects us and makes us learn how tough our parents are,” said Dalin, 18, to the City Morning Post. Dalin, a senior high graduate, and her 12-year-old brother Xiaolin came up with the idea.

    They learned to work hard to sell their veggies. Every morning they had to wake up at 3 o'clock. Some of them went to the fanner's market to buy vegetables. Some of them went to the local market lo lake up a temporary stall(临时摊位). To lower the cost, they learned to bargain(讲价) with the sellers.

    At abou16:30 am, they began to sell vegetables. They peddled(吆喝) loudly to attract(吸引) customers. After several days, they got some experience, too.

    For example, it was better to put vegetables in order and bigger ones on top. When the vegetables are too heavy, they should give customers an extra plastic bag.

    When they finally packed up and went home, they had a small meeting. Everyone took notes and shared their feelings.

    “We are tired,” said Dalin. “but we gained a lot.