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nguyenthiphuonglinh2019n
2 năm trước
Cho tam giác ABC, vẽ đường cao AH ( H nằm giữa B và C). Biết AH ²=HB.Hc. Chứng minh rằng Ac là tiếp tuyến của đường tròn tâm B bán kính BA
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IB VI. Read the text and choose the best answer (A, B, C or D). THE FOOD PYRAMID Children have to eat well to grow. We all have to eat well to feel good. "Eating well means eating the right kinds of food. It also means eating the right amount of food. The Food Pyramid is one plan for eating well. The pyramid has six parts which are for six food groups including (i) grains, (i1) vegetables, (iii) fruit, (iv) oil, (v) milk, and (vi) meat and beans. There are different kinds of food in each group. For example, the milk group includes cheese and yogurt. The meat and beans group also includes fish and eggs. The Food Pyramid plan says to eat food from all the groups every day. The six parts of the pyramid are of different sizes. For example, the first part, for grains, is big. That means, "Eat a lot of grains". The part for oil is very small. We need some oil, but not a lot. The Food Pyramid does not show every kind of food. For example, there is no tea or coffee in the plan. There is also no chocolate.

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