阅读理解。 Thomas Adams discovered bubble gum (泡泡糖) in the 1870s. He was an American.  He wanted to find a use for chicle.  Chicle is a Spanish word for sticky water that comes from one kind of Mexican tree. Mr. Adams wanted to make rubber (橡胶) from chicle. Mr. Adams worked in his home while he tried to find a way to make the chicle stronger.  His son, Horatio, also helped him now and then. One day, young Horatio began to chew the chicle while he watched his father work. It did not taste very good, but Horatio enjoyed chewing it. Then the young boy began to blow bubbles with the new chicle which his father had made.  Mr. Adams had discovered bubble gum by accident. Mr. Adams gave up trying to find a way to make rubber from chicle,  Instead, he wanted to try and sell the new gum that he had made.  He thought other people might like the taste, too. He began to see his new kind of chicle as candy. In no time. children everywhere began chewing bubble gum. 1. Where was Thomas Adams from? A. Canada. B. The United States. C. Europe D. England. 2. Who was Horatio Adams? A. Thomas' father. B. Thomas' wife. C Thomas' brother. D. Thomas' son. 3. What was Thomas Adams trying to make? A. A new kind of rubber. B. A new kind of chicle. C. A new kind of candy. D. Electric light. 4. Why did Thomas Adams want to sell bubble gum? A. His son enjoyed chewing it. B. He thought many people would like it. C. He could not make strong rubber from chicle. D. All of the above. 5. Which of these sentences is not true? A. Horatio helped his father. B. Thomas Adams made rubber from chicle by accident. C. Horatio was the first person to chew bubble gum. D. Thomas Adams never made rubber.