san2612
Member
- Joined
- Jun 9, 2009
- Member Type
- Academic
- Native Language
- Vietnamese
- Home Country
- Vietnam
- Current Location
- Vietnam
[FONT=±¼¸²]The reading:[/FONT]
[FONT=±¼¸²]Making an efficient ice box was not as easy as we might now suppose. In the early [/FONT]
[FONT=±¼¸²]nineteenth century, the knowledge of the physics of heat, which was essential to a [/FONT]
[FONT=±¼¸²]science of refrigeration, was rudimentary. The commonsense notion that the best [/FONT]
[FONT=±¼¸²]icebox was one that prevented the ice from melting was of course mistaken, for it was [/FONT]
[FONT=±¼¸²]the melting of the ice that performed the cooling. Nevertheless, early efforts to [/FONT]
[FONT=±¼¸²](15)[FONT=±¼¸²] economize ice included wrapping the ice in blankets, which kept the ice from doing its [/FONT][/FONT]
[FONT=±¼¸²]job. Not until near the end of the nineteenth century did inventors achieve the delicate [/FONT]
[FONT=±¼¸²]balance of insulation and circulation needed for an efficient icebox.[/FONT]
[FONT=±¼¸²](The reading TOefl 500)[/FONT]
[FONT=±¼¸²](A) completely prevent ice from melting[/FONT]
[FONT=±¼¸²](B) stop air from circulating[/FONT]
[FONT=±¼¸²](C) allow ice to melt slowly[/FONT]
(D) use blankets to conserve ice
I chose A but the answer key is C. which is correct
[FONT=±¼¸²]Making an efficient ice box was not as easy as we might now suppose. In the early [/FONT]
[FONT=±¼¸²]nineteenth century, the knowledge of the physics of heat, which was essential to a [/FONT]
[FONT=±¼¸²]science of refrigeration, was rudimentary. The commonsense notion that the best [/FONT]
[FONT=±¼¸²]icebox was one that prevented the ice from melting was of course mistaken, for it was [/FONT]
[FONT=±¼¸²]the melting of the ice that performed the cooling. Nevertheless, early efforts to [/FONT]
[FONT=±¼¸²](15)[FONT=±¼¸²] economize ice included wrapping the ice in blankets, which kept the ice from doing its [/FONT][/FONT]
[FONT=±¼¸²]job. Not until near the end of the nineteenth century did inventors achieve the delicate [/FONT]
[FONT=±¼¸²]balance of insulation and circulation needed for an efficient icebox.[/FONT]
[FONT=±¼¸²](The reading TOefl 500)[/FONT]
- [FONT=±¼¸²]According to the information in the second paragraph, an ideal [/FONT]
[FONT=±¼¸²](A) completely prevent ice from melting[/FONT]
[FONT=±¼¸²](B) stop air from circulating[/FONT]
[FONT=±¼¸²](C) allow ice to melt slowly[/FONT]
(D) use blankets to conserve ice
I chose A but the answer key is C. which is correct