综合阅读理解策略训练 — 英语选择题

阅读短文，先找能概括全文的句子，再用细节核实。Mia wants to help birds. She puts a small box in a tree. She puts some seeds in it. In the morning, two birds come and eat. Which sentence best tells the main idea? A. Mia helps birds. B. Mia has two birds. C. Mia eats some seeds. D. Mia sees a small tree.