Beginning in October, more than 13,000 McDonald’s (麦当劳)restaurants in America will use a new variety of cooking oil. McDonald’ s aims to make its French fries (油炸食品) and other fried foods healthier. The change will not affect the taste or the number of calories in the food. But by changing the cooking oil, McDonald’s says, it hopes to cut by nearly half the amount of trans fatty acids (转换脂肪酸) in French fries and reduce the amount of saturated fats(饱和脂肪) by 16 percent. Scientists believe that trans fatty acids and saturated fats raise cholesterol(胆固醇) levels and increase the risk of heart disease. McDonald’s new step is important because McDonald’s is an industry leader and other fast-food chains and food processors may follow the lead. For McDonald’s ,the action comes at a time when Americans are becoming more and more concerned about; obesity (肥胖) and are increasing pressure on food companies to offer healthy and nutritious (有营养的) food to consumers. After three years of study, McDonald’s officials say they are switching oil that is lower in saturated fats and trans fatty acids. McDonald’s says the change will not cause higher price for consumers. Though there is some change, scientists say that the amount of trans fat in foods at McDonald’s and at other fast-food companies is still important. 小题1:More than 13,000 McDonald’s restaurants in America will use a new kind of cooking oil to ______________. A．lower the costs of the products B．maker its food taste hatter than ever before C．cure (治愈) the heart disease D．do good to the health of consumers 小题2:The underlined ward 'switching' here has the same meaning as ' _______ '. A．turning on B．turning off C．changing D．studying 小题3:The main idea of the passage is __________ . A．McDonald’s is a pioneer in food products B．McDonald’s is enlarging its restaurants in the world C．fried foods can’t keep up with the development of modem society D．McDonald’s is to use new cooking oil 小题4:When a new kind of cooking oil is used in McDonald’s, ________ A．the prices of McDonald’s foods will be a tot higher B．consumers will find the taste of McDonald’s foods different C．many other food companies will do what McDonald’s does D．obesity will disappear in American society sooner or later