Result test: Prepare the questionnaire, and utilize the paired sample t to test the difference of class management ability before and after in-post practice.

效果检验：编制调查问卷，利用配对样本t检验方法检验顶岗前后班级管理能力差异。

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The test result from Russia concerns locally produced hotdogs and only affects the Russian market, Ikea said.

CNN: Ikea finds horse meat in Russian hotdogs

Jacobs criticized the UCI, cycling's international governing body, for revealing Landis' abnormal drug test result last week.

NPR: Landis Facing Uphill Battle on Doping Charges

The 30-year-old American offered possible explanations as to why a test result showed his testosterone-to-epitestosterone ratio was out of whack.

NPR: Landis Facing Uphill Battle on Doping Charges