题目内容：

    Refrigerators are widely used in our kitchens. Do you often clean your refrigerator? If you haven't cleaned it for a long time, clean it right away. Refrigerators need to be cleaned very often. Do you know how to clean a refrigerator?

1.Take all the food out of your refrigerator. Place it on a table or counter so that your refrigerator is completely emptied out.The best time for this may be before your weekly shopping tip. There will be fewer things that you need to move out of your refrigerator.

2.Throw out some items. You can check the expiration date（有效期). Then you will know which items should be thrown out. You can also throw away items that you are unlikely to use. If no one in your family likes olives, throw them away.

3.Take out shelves, drawers or other movable parts from your refrigerator and wash them, In order to wash them more quickly, you can place them near the kitchen sink（洗碗槽）. For a quick clean, you don't have to take out all shelves. You'd better do it if you want a deep clean.

4. Clean the inside of the refrigerator. You can clean it with a clean cloth. A dry cloth will be a better choice. Don't forget to clean the inside of the refrigerator door. If there is something dirty that is not easy to clean, you can use a chemical cleaner.

根据材料内容选择最佳答案。

1.When is the best time to clean our refrigerator according to the passage?

A.Before we do some shopping. B.Before our weekly trip.

C.After the food is eaten up. D.After the food inside goes bad.

2.The Chinese meaning of the underlined word”items" in the passage is probably________.

A.污迹 B.道具 C.物品 D.条款

3.Why does the writer mention " olives" in the third paragraph?

A.Because it is easy to find " olives" when we open the refrigerator door.

B.Because " olives" are used as an example when talking about throwing something out.

C.Because "olives" are a kind of food we often put inside the refrigerator.

D.Because "olives" are a kind of food which can make the refrigerator dirty easily.

4.Which of the following is NOT mentioned in the passage?

A.Taking the food out of the refrigerator.

B.Throwing out some food which is out of the expiration date.

C.Cleaning the inside of the refrigerator door.

D.Putting back shelves, drawers or other movable parts.

5.What does the passage mainly talk about?

A.The importance of cleaning refrigerators. B.Steps of how to clean refrigerators.

C.The proper time to clean refrigerators. D.Different ways to clean refrigerators.