题干

 小杨是个爱动脑、爱动手的学生,课外时间喜欢做一些小实验.在他学习完“植物的生殖方式”以后,知道了种植马铃薯时,通常是将它的块茎切成几块,每块种薯上要保留一个芽眼,芽眼生出的幼芽生长发育成为一株马铃薯幼苗,没有带芽眼的马铃薯块茎则不能发芽.

为了验证该知识,小杨同学设计进行了下面实验.请根据这一实验分析回答问题.

①两个盛有潮湿的、肥沃土壤的花盆,编号为甲、乙.

②将挑选好的马铃薯块茎切成大小相等的小块若干,分成两组,将有芽眼马铃薯块茎种在甲花盆内,将没有芽眼马铃薯块茎种在乙花盆内.将两花盆放在相同的适宜条件下培养,一段时间后观察.

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阅读短文,从每题所给的四个选项(A、B、C 和 D)中选出最佳选项。

B

Welcome to English First, a teaching experience you will never forget!

    We're looking for amazing English teachers to join us in Beijing, Shanghai, Shenzhen, Guangzhou, and many other cities across China to teach adults, children or at our online     schools. You will get a good pay.

About English First(EF)

    English First is the world's best education company. Set up in 1965, EF runs in over 50 countries around the world. We still need teachers for teaching jobs across China, so if you  like modern city life, we probably have what you want. We  have both Teens  schools and Adult schools in over 60 cities in China.

Teaching at English First

    At English First, we'll offer you the best teaching ways to help you become the best teacher. Our new and colorful classrooms provide you with great teaching tools, including computers and iPads. We also offer the best teacher development program for our teachers.

Join the EF Teacher Network Today

    We're here to provide what we need for every step of the way, from preparing your work visa to the airport pickup service. Learn how to order food in Chinese during our free language classes. There're many new experiences of living abroad "waiting" for you to have here. And you'll experience them to the fullest at EF.

What you should be (what you need)for the job

★A native English speaker.

★Having a four-year learning experience at university.

★The Teaching English as a Foreign Language(TEFL)paper.

★A passport holder from the western country.

★The ability to live abroad for at least one year.