Foods quickly spoil and break down if they are not stored correctly. Heat and damp encourage increase in micro-organisms(微生物的), and sunlight can1vitamins in such food as milk. Therefore, most foods should be stored in a cool, dark and dry place.
    Some foods2bad quickly, such as meat, eggs and milk. They should be stored in a temperature of 5°C~10°C. In this temperature range, the activity of micro-organisms is3 In warm climates, this temperature can be kept4in a fridge or in the underground basement(地下室) of a house.
    Dry goods, such as flour and rice, should be kept at a slightly higher temperature. A temperature of 15°C is ideal. In Britain and northern European countries this means that the room in which dry foods are stored should5the general heating of the house. The room should also be well 6and, above all, dry. Damp very quickly causes the7of the green molds. These molds often grow on cheese if it is not stored properly.
    Fruits and vegetables need cool and damp8, so an underground basement usually9an excellent storage place. If the central heating unit is in the basement,10, it will not be ideal unless the unit and the pipes(管道) do not give out any heat.

推理是研究和学习化学的一种重要方法，正电子、负质子、反中子都是反粒子，它们跟通常所说的电子、质子、中子相比较，质量相等，电性相反（中子和反中子都不带电）．科学家已经发现反氦原子（已知氦原子核中有两个质子和两个中子）．你推测反氦原子的结构可能是（　　）

    After I visited my elder sister's house, I was reminded just how different the apartment living with a child was. She has a nice big house with a few floors, a big backyard and lots of toys. Her house is my son Tom's little piece of heaven. At her house there are little toys, big toys, a doll house, a play house and more! There are bedroom stocked with train tables, ride-on toys and big trucks.

    The main difference about being an apartment mom is that you cannot become a collector of “things”. I continually get rid of anything too large. When Tom was born, we made a rule that there would never be any stuffed animals in our apartment that were larger than him at that time. We also made a rule that we would only ever have at most five stuffed “anything” at one time. So far this had worked out well for us. These rules left Tom with a few special soft creatures to play with, but that can be easily put away.

    Since we want to keep the appearance of being clean city dwellers, we have limited Tom's play things to one toy basket in the main living space and one big storage bin in his bedroom. I am constantly thinking about living space when I buy anything for our little Tom. We love the storage bin in Tom's room. It is filled with fun play things. It is a place to keep his toys and everything gets pulled in and out daily. Anything that doesn't fit is often weeded out to create space.

    Tom absolutely likes going to his aunt's house and pulling out every single toy available to him. Of course, Tom does not notice that when he returns home he only gets one basket of toys instead of many rooms of toys. Right now Tom lives fully in his 1,100-square-foot apartment and seems very satisfied with his basket of toys.

下列关于欧盟成员国之间的联系的叙述，不正确的是（    ）