投放危险物质罪与生产、销售有毒、有害食品罪的主要区别在于（）
A.行为方式不同
B.罪过形式不同都是故意
C.行为发生的条件不同
D.对行为主体要求不同
E.主观故意内容有所不同
参考答案：A, C, D
解析：
投放危险物质罪：是指故意投放毒害性、放射性、传染病病原体等物质，危害公共安全的行为。
生产、销售有毒、有害食品罪：是指在生产、销售的食品中掺入有毒、有害的非食品原料，或者销售明知掺有有毒、有害的非食品原料的食品的行为。
| 完形填空。 | |||
| A professor(教授) told his students to go into the city slums (贫民窟) to study the life of 200 boys. He asked them to 1 reports about each boy’s life and future. Every one of the students wrote, “He doesn’t have any hope.”Twenty-five years 2 , another professor read about the earlier study. He told his students to ___3___ what had happened to the boys. They tried very had and found that 176 of the boys had became successful 4 doctors, teachers and scientists.The professor was very 5 and decided to study it further. Luckily, all the men were living near the place and he was able to ask each one, “What made you 6 ?” Each one answered, “There was a teacher.”The teacher was 7 living there, so the professor found her and asked the old woman 8 she had used to pull those boys 9 the slum, and change them into successful people.The teacher’s 10 began to shine and said with a sweet smile, “It’s really very easy. I love those boys.” | |||
( )1. A. read | B. study | C. write | D. take |