精选优质文档-倾情为你奉上课后阅读作业 Unit 2Period 2. 阅读理解APeople have strange ideas about food. For example, tomato is a kind of very delicious vegetable. It is one of useful plants that can be prepared in many ways. It has rich nutrition(营养)and vitamin in it. But in the 18th century, Americans never ate tomatoes. They grew them in their gardens because tomato plants are so pretty. But they thought the vegetable was poisonous(有毒的). They called tomatoes“poison apples”. President Thomas