托福题库
提供托福相关考试试题、历年真题、模拟试题和答案解析，支持在线查看与练习。
科目：
全部
最新收录试题
单选题
托福
Artificial refrigeration involves all of the following processes EXCEPT
2011-09-14
收藏 0 次
单选题
托福
What can be inferred from paragraph 1 about cold storage before the invention of artificia
2011-09-14
收藏 0 次
单选题
托福
The word perishable in paragraph 1 is closest in meaning to
2011-09-14
收藏 0 次
单选题
托福
根据以下材料，回答题：What is the main reason that people developed methods of refrigeration?
2011-09-14
收藏 2 次