实验由两部分组成：两篇英文写作前测和四篇写作。
The experiment is composed of two pieces of writing for pretest and four passages writing.
每个组进行三项测试——前测、后测以及两项测试后紧接一周的测试。
Each group was given three tests - a pretest, a posttest, and a test a week after the first two tests.
实验在我学院04级设备专业与03级机电专业同时进行，采用“实验组对照组前测后测”的设计方案。
The experiment is done in Grade 03 of Machinery and Electronics and Grade 04 of Machinery and Equipment apparently.
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