单词：irradiation polymerization
[高分子] 辐射聚合
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[00:00.00]Listening Comprehension (20 minutes) [00:-1.00]Section A [00:-2.00]Directions:In this section,you will hear 10 short conversations.At the end of each conversation,a question will be asked about what was said.Both the conversation and the qu
发表于:2019-01-25 / 阅读(164) / 评论(0)
英语六级听力练习集锦
英语六级听力练习集锦
AGRICULTURE REPORT December 17, 2002 — Irradiated Meat This is the VOA Special English Agriculture Report. The United States government has approved methods of destroying bacteria in meat by using r
发表于:2019-01-30 / 阅读(130) / 评论(0)
农业与发展
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