题目

假如你是李华，一个英国游学团要来你们学校，学校需要一些志愿者，你想成为其中的一员。请读下面的招募启事，写一封应征邮件。Volunteers WantedSome students from the UK will come to our school to have a study tour. They are interested in Chinese culture. We’re looking for some volunteers to help us.Can you introduce yourself (English ability and personality)?Can you plan an activity about Chinese culture and explain your purpose?If you are interested, please email us at Andrew@163.com.注意：①请回复招募启事中所提及的两个问(黑龙江)一种灭虫药粉30千克，含药率是15％，现在要用含药率较高的同种灭虫药粉50千克和它混合，使混合后的含药率大于20％而小于35％，则所用药粉的含药率x的范围是 [　　] A．15％＜x＜23％B．15％＜x＜35％ C．23％＜x＜47％D．25％＜x＜50％