1, riddle: an iron cylinder is round and long, and the watch is placed on the forehead. The patient has difficulty breathing. Please ask it to help quickly. (hit one thing)

Answer: oxygen cylinder.

2. Mystery: From a distance, it looks like a locomotive, and its speed is not as fast as that of cattle. It turns around all day long, and the road is smooth after walking. (hit a machine)

Answer: roller.

3. Mystery: If you get angry, you will get angry. When you travel thousands of miles every day, it is said that it has a festival and it is satisfactory. (Take a transport)

Answer: the train.

4, riddle: there are pills and tablets, the taste is bitter and seldom sweet. Adults and children are sick, so don't delay taking them on time. (hit one thing)

Answer: medicine.

5, riddle: a person, very embarrassed, with two knives in his waist and a hat on his head, does not buy a ticket by car or boat. (type a word)

Answer: multiply.