1.What is the topic of the passage?
2.Where was ice used after the Civil War?
3.What was essential to a science of refrigeration according to the passage?
4.It can be inferred from the passage that the theoretical foundation of ice box should be that____________.
5.Without an ice box，farmers had to go to the market at night because_______.
鲁教版英语八下《Unit 3 I used to be afraid of the dark》word教案（2）
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（7）
鲁教版英语八下《Unit 1 Have you ever been to an amusement park》word教案（14）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（1）
鲁教版英语八下《Unit 1 Have you ever been to an amusement park》word教案（12）
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（8）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（5）
鲁教版英语八下《Unit 5 I like music that I can dance to》word教案（9）
鲁教版英语八下《Unit 1 Have you ever been to an amusement park》word教案（13）
鲁教版英语八下《Unit 1 Have you ever been to an amusement park》word教案（11）
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（3）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（2）
鲁教版英语八下《Unit 6 Where would you like to visit》word学案
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（9）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（7）
鲁教版英语八下《unit 2 how do you study for a test》word教案
鲁教版英语八下《Unit 3 I used to be afraid of the dark》word教案（4）
鲁教版英语八下《Unit 8 Have you packed yet》word教案（4）
鲁教版英语八下《Unit 8 Have you packed yet》word教案（1）
鲁教版英语八下《Unit 1 Have you ever been to an amusement park》word教案（1）
鲁教版英语八下《Unit 3 I used to be afraid of the dark》word教案（1）
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（1）
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（4）
鲁教版英语八下《Unit 7 I’ll help clean up the city parks》word教案（5）
鲁教版英语八下《Unit 8 Have you packed yet》word教案（2）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（12）
鲁教版英语八下《Unit 1 Have you ever been to an amusement park》word教案（2）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（11）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（10）
鲁教版英语八下《Unit 6 Where would you like to visit》word教案（4）