1. (2020八上·重庆期中) 阅读理解

    There are many kinds of foods in the world. Scientists learn a lot about them. They say that there are some kinds of foods people must eat every day. For example, people must eat some green and yellow vegetables. People shouldn't eat too much meat. People also need to eat some fruits, bread and rice. Of course, some water and milk are necessary.

    Scientists say people in different countries and different places eat different kinds of foods. They cook foods in different ways. They eat at different times. In one place, people eat once or twice a day. But in another place, people eat three or four times. The scientists say when to eat and how many times to eat are not important. What to eat is the most important thing.

    Nowadays, the world faces two food problems. People in some places, for example, in Africa, are always hungry. On the other hand, many people are eating unhealthy foods. They're bad for their health. So it's our duty (责任) to make everyone full and healthy.

1. （1） _______ know about food most according to the passage.

   A . Farmers B . Cooks C . Scientists D . Customers
3. （2） Scientists think the most important thing about foods is _______.

   A . how to cook B . when to eat C . what to eat D . where to eat
5. （3） What can we infer（推断）from the passage?

   A . We needn't eat any colorful vegetables. B . Eating foods at different times makes people unhealthy. C . People all over the world eat in the same way. D . We should try our best to help work out the food problems.
7. （4） We may read this passage in _______.

   A . a picture book B . a science story C . a poem collection D . a health newspaper