填空 1、填空题:In 1903, Mikhail Tsvet invented chromatography, an important__1__ technique.答案: 【 analytic】 2、填空题:Michael Faraday was another early worker, whose major contribut...
单元测验 1、单选题:Directions: Please read the following sentences and choose the correct answers.A test to check your blood is called a ________. 选项:A: blood type B: blood test C: bl...