题目

有关世界各地牧场退化情况，叙述不正确的是A. 欧洲情况较好，载畜量最高        B. 北美和澳大利亚情况最好C. 中国草场退化严重                D. 非洲、南美洲面临退化的问题 答案：BMiddle school students usually have a lunch break（休息）for one and a half to two hours. Some students have lunch in the dining hall. They can have vegetables,meat,rice or nooles.Others like buying their lunch outside the school or go home to eat with their family.Most middle school students have lunch in their dinning hall. Their lunchtime is usually about an hour. The US school served（提供）food like fries and hot dogs before. But they are high in fat. Now vegetables, wholegrain（全谷物制作的）bread and low-fat milk are on the menu.In Japan, middle school students all eat together in their classrooms. The meals are healthy with rice, vegetables, fish and soup. High school students can bring bentos（便当）to school. Mothers make the bentos with vegetables in different colors and shapes.1.In China, middle school students don't have ______ for lunch in the dining hall.A.rice B.bread C.vegetables2.The US middle school students' lunchtime is about ________________.A.30 minutes B.45 minutes C.1 hour3.In Japan, students ______________________.A.can eat lunch outside the schoolB.often have fries and hot dogs for lunchC.can eat bentos for lunch