阅读理解。 Dear Editor (编辑), I used to be a doctor in a children's hospital. Sometimes I treated children who had been poisoned (中毒) by medicines for older family members. The children didn't know the medicine was dangerous; they just knew it tasted sweet. Children easily opened the bottle that we now use in China. Some days ago I talked about medicine with an American. He showed me a kind of plastic bottle. The design was very quite simple and I'm sure our Chinese factories could produce these bottles. The top of the bottle locks but can be opened by pressing down on it while turning. This is difficult for most young children to do, though grown-ups can open these bottles very easily. I'm certain that the price of making such tops would be very low. As a doctor, I'd love to see this done. And most parents would be grateful. Yours, Li Hua 1. The writer's job in the hospital was mainly to _____. A. treat sick children B. treat poisoned children C. give medicine to people D. give medicine to children 2. From the letter one can conclude that _______. A. some children like to take adults' medicine B. some adults medicines cause danger to children C. all children like to take sweet medicines D. all adults' medicines are dangerous to children 3. The doctor thinks that we should _____. A. happy about China' a hospital B. sorry for what has happened C. eager to disclose the affair D. anxious to solve the problem 4. The doctor thinks that we should ______. A. learn from the Americans B. buy this kind of bottle C. produce this kind of plastic bottle D. turn to Americans for advice 5. The letter was written to the editor to ask for _____. A. money from the newspaper B. the plastic bottles from the readers C. advice from the editor D. support from the public