Cho tam giác nhọn ABC, 3 đường cao AD;BE;CF gặp nhau tại H qua 3 đỉnh A,F. Kẻ 3 đường thẳng // BC ; AC, chúng cắt nhau tại M,N. CMR H cách đều 3 đỉnh của Tam giác .

Cho tam giác nhọn ABC, 3 đường cao AD;BE;CF gặp nhau tại H qua 3 đỉnh A,F. Kẻ 3 đường thẳng // BC ; AC, chúng cắt nhau tại M,N. CMR H cách đều 3 đỉnh của Tam giác .

các bạn có khẩu hiệu nào cho chủ đề tiết kiệm điện ko vậy...giúp mk vs....mai mik phải nộp bài r...các bạn giúp mk nhé...!!!

One London newspaper reported that a……………(1) became so obsessed with various computer games that he………………(2) from his parents and his schoolmates in order to buy more. This is not the only such case. The head of a primary school recently claimed that …………………(3) the children at this school steal each other’s lunch money for the same reason.Playing computer games can actually hurt you.

Dr Leonora Keller, a health expert, said that many children play these games which
such enthusiasm that they suffer ………………..(4) “Space Warrior’s Wrist”. The muscles of the lower arm become inflamed as a result of repeated ………………..(5) of the wrst and constant pressure on the computer control stick. This is also causes……………..(6) aches and pains their elbows and shoulders as well as strange sores on ……………….(7) hands.Weight problems are another result.Dr Keller also found that children who spend a lot of time…………………(8) electronic games have a tendency to be fatter…………………..(9) those who do not. she said that “for some reasons these children tend to eat more sugar and fat” and that “many of them get too……………. (10) exercise to burn up these things.”

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Có ai sắp thi chon đội tuyển chính thức vs thi huyện tiếng anh 7 giống mk ko