科学家爱因斯坦曾说："我们吃别人种的粮食，穿别人缝的衣服，住别人造的房子。我们的大部分知识和信仰都是别人创造的，由别人传授给我们的......个人之所以成其为个人，以及他的生存之所以有意义，与其说是靠他个人的力量，不如说是由于他是伟大人类社会的一个成员，从生到死，社会都在支配他的物质生活和精神生活。"对此正确的理解是(     )
①个人不能离开社会独立存在 ②人的全面发展与社会的全面进步密不可分
③社会是由个人组成的社会   ④个人的生存和发展离不开社会提供的各种条件 

D

    Almost every Chinese person can recite(背诵) the two lines of the famous poem, "Every grain on the plate comes from hard work". But sadly, many of us don't actually get the real meaning of these lines: Don't waste food.

    A CCTV program reported that the food Chinese people throw away every year is enough to feed 200 million people for a year. Do we have too much food? Absolutely not. According to the UN World Food Program, there were 925 million hungry people around the world in 2013, especially in developing countries. Six million children die of hunger every year.

    Chinese people are well-known for being friendly and generous. Many even feel that they lose face if their guests have eaten all the food on the table. Luckily, a number of people have realized the importance of saving food. What should we do in our daily lives to waste less food?

    ⒈ Don't order too much in a restaurant. Only order as much as you want to eat. If you cannot eat all the food you ordered, take the rest of it home.

    ⒉ Don't leave any food in your bowls while having meals.

    ⒊ Keep an eye on what food you have at home. Don't buy too much, especially for vegetables and fruit.

下列各项中，标点符号的使用合乎规范的一项是 (　　)