请根据短文的内容，回答题。 Dorm Food More Comfortable Once upon a time, eating in an American college dorm meant soup in a hotpot or getting pizza delivered. The most interesting thing about the campus dining hall was often the salad bar. No more. These days, US college students have refined tastes and a growing interest in preparing their own food.Mini-refrigerators and microwaves in dorm rooms are as essential as computers, which are basic equipments. "The cooking awareness of college students is increasing," said Tom Post, president of campus dining for Sodexo, a major food service company. "Students today grew up watching celebrity chefs on TV, eating organic food and valuing good nutrition." In response, cafeteria (自助食堂 ) menus have changed. Sodexo&39;s top campus foods for 2009, "include Vietnamese noodle soup, goat cheese salad, and Mexican chicken. But colleges are also catering to student demands for more flexible and personalized dining options. Chartwells, the company that prepares food for dining halls at Ohio Wesleyan University in the state of Ohio, offers microwaveable meals that "students can take away, as well as a program where students can have food individually prepared. Or they can even do their own cooking. This fall, Sarah Lawrence College in New York will offer students on its meal plan a chance to pick up groceries in the cafeteria as an alternative to a cooked meal. "Students want things that are easy to make, things that don&39;t take long and will still taste good," said Rachel Holcomb, a University of Massachusetts-Amherst student who updated recipes for the new edition of The Healthy College Cookbook. Angelo Berti, a chef at the College of the Holy Cross in Worcester, Massachusetts, teaches cooking in dorm kitchens. But Berti says he&39;s not just teaching recipes. He&39;s encouraging students to use dining together as a way to socialize and as a means of self-expression; "The meal is your canvas ( 油画，画布) ," Berti said, "You paint what you want." Which of the following is not mentioned as the basic equipment in today‘s student dorms? 查看材料