[D] not leading to a definite result

    25. According to the passage, it is advised that cell phones ________.

     [A] be done away with

     [B] be handled cautiously

     [C] be researched scientifically

     [D] be associated with cancer

    Passage Two

    Questions 26 to 30 are based on the following passage.

    Everyone knows that the favorite food in the United States is the hamburger. It seems impossible, but people eat 34 billion hamburgers a year. This is enough to make a line of hamburgers around the world four times.

     The favorite place to buy a hamburger is a fast-food restaurant. In these restaurants, people order their food, wait just a few minutes, and carry it to their tables themselves. They can eat it in the restaurant or take the food out and eat it at home, at work, or in a park. At some restaurants people can drive up beside a window. They order the food, and a worker hands it to them through the window. Then they eat in their cars.

     Hamburgers are not the only kind of food that fast-food restaurant serve. Some serve fish, chicken, beef sandwiches, or Mexican food. They also serve fries (French fried potatoes), shakes (a drink made from milk and ice cream), soft drinks, and coffee.

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