In the United States, many people try to save time. In many families, both the husband and wife work full-time, so their free time is very important to them. They look for quick and convenient ways to do their shopping and other things they want to do.
Many years ago, people had to go to the fish market to buy fish, to the butcher for meat and chicken, to fruit market for fresh fruit, and to the bakery for bread and rolls. Now most people go to just one place. They can buy fruit, bread, meat, fresh vegetables, frozen food, and beer at the local supermarket. They can also buy things for house, such as pots and pans, brooms and buckets. They can even buy socks and stockings, shoes, mitten, and sunglasses at supermarkets.
When Americans eat out, they often go to fast-food restaurants. Breakfast, lunch, and dinner are always ready. People order their meals at the counter and wait for their food just a few seconds or minutes. Then they carry the food to a table, eat it, and throw their trash away. It takes only 20 minutes or so to eat a meal at a fast-food restaurant.
Supermarkets and fast-food restaurants are therefore very important to people in the United States. They are quick and convenient, and that’s what people want when they are always looking for ways to save time.

5. The reading is about ___.
A．supermarket
B．fast-food restaurants
C．shopping and eating in America
D．saving time

看两个KEY SENTENCE
第一句：In the United States, many people try to save time。在美国，很多人都在尝试节省时间

最后一句：and that’s what people want when they are always looking for ways to save time.
人们在寻找多种方式节省时间时一直想要的就是那个（这里的那个是指前文提到的超市和快餐店）

所以不看中间的内容就可以选出答案必然是D。